As for the first issue, I can't reproduce it in TB 60.3/W10. When I enter a Bcc address on one line, either manually or with address autocomplete, the cursor automatically moves to the next line with Bcc already selected. The only time it changes back to To: is if a contact is added by double-click in the Contacts sidebar.

Help/Restart with Add-ons Disabled (safe mode) and see if the behavior changes.

SORRY! I checked the rev. level loaded here. It is T-BIRD 60.3.0

This PC is a H-P desktop w/ WINDOWS 7 HOME set to automatically update from MICROSOFT. It is loaded with SPYBOT, MICROSOFT SECURITY ESSENTIALS, CCLEANER (auto-update) & MALAWAREBYTES anti-malware, etc. programs. I also use FIREFOX, and it's running the latest version.

I wish that MOZILLA wouldn't automatically upgrade. I was satisfied using ver 52.nnnn, even with the annoying editing quirks that are so profound.

a) We are not Mozilla

b) Every major software source offers automatic updates, for a variety of reasons: bug fixes (OK, maybe not for you, but for someone else who needs it), security fixes, supporting new hardware, supporting changed, updated and new OS, to workaround OS problems, etc.

If we didn't supply updates then users would complain. So between in choosing between users who might complain about not updating vs users who might complain about doing updates, we choose to favor the former.

I've seen the issue you mention reported before, and it was caused by an add-on

Isn't that interesting! the link clearly states:

https//support.mozilla.org/en-US/questions/ .........

MUST BE a different MOZILLA. Sorry I related the two entities!

When I went to the tab, Tools/Add-On Options, it showed that there are NO add-ons loaded.

Safe mode disables other things besides add-ons, so it's the first recommended diagnostic step.

Mozilla provides some infrastructure for TB, but is not involved in development of the program. TB updates are specified by the user in Tools/Options/Advanced/Update.

Petri_Dish said

Isn't that interesting! the link clearly states: https//support.mozilla.org/en-US/questions/ ......... MUST BE a different MOZILLA. Sorry I related the two entities!

You're right, and completely understandable. Mozilla is plastered all over the place. But this is just a support service that they provide for us.

SFHOWES: OK!, So I've started T-BIRD in SAFE MODE. I sent an e-mail to several friends, and for each e-mail address AFTER setting the first one at Bcc:, I had to go back to RESET the subsequent e-mail addresses as Bcc: The upshot is that your suggestion, while I understand was meant to be a valid solution has NOT produced the desired result. This version of T-Bird is 60.3.0, and there are NO "Add-ons" installed, since as I reported earlier, the list of add-ons was null. At this point, I think the BEST solution is to give me the instructions how to re-load Ver. 52.nnnn, and be done with it, since it seems that Ver. 60 has a fatal flaw in my situation. Finally, in this recent set of exchanges regarding this problem, I also mentioned to the tech people with whom I've conversed that it is unfortunate that MOZILLA unilaterally downloaded this Ver. 60 upgrade. I was berated by the Tech in response, claiming that y'all have been criticized from users on both sides of this issue. The criticism that was put forward was that EVERY other software vendor automatically downloads upgrades. Well, that is patently false. Just today, I received a notice from MICROSOFT alerting me that Updates to WINDOWS is available WITH the option to proceed. I get similar notices from SPYBOT, from CCLEANER (for which I have a paid subscription) and from MALAWAREBYTES for their malware program. Other applications that I use (PLC-programming editors, etc.) are available through their sponsors' websites on an as-needed basis. Thank you.

sfhowes, You directed me to force TB to start in SAFE MODE, which I did. But, I got caught up in all the excitement so to speak that I failed to relate two additional pieces of information. First, after doing that, and mentioning that there are NO "add-ons" in the list, I FAILED to also tell you that NOW the ADDRESS LISTS do not appear on the left side of the text-entry screen area. Furthermore, when sending an e-mail to multiple addresses, even AFTER defining the first address as Bcc:, it does NOT continue with the Bcc: mode, but reverts to the "To:" mode. So, I'm NOT at all sure where we go from here. By the way, when I started this PC today, I got an alert from WINDOWS that there were several "updates" to be applied. Thinking that these are security-related, I let them process to completion.

I can tell you one thing ..... we sure didn't have these problems 50+ years ago when I was dealing with stacks & stacks of Hollerith cards, being fed into the hopper on our mainframe computers!! The ONLY problems we had was making sure that we didn't drop the cards all over the floor!!!! Aaaah!, the good ol' days of FORTRAN programming!!!!

Thank you!!!

The fact that the Contacts sidebar (F9 in the Write window) doesn't remain between sessions, safe mode or not, suggests to me the Bcc problem may be caused by the same thing. In your CCleaner settings, make sure there is no effect on TB. There is nothing to be gained by 'cleaning' TB with this tool, and a lot frustration if you do.

THANX!!! I just checked the settings in CCLEANER, under "Applications" and there was NOTHING checked off for THUNDERBIRD. There is a couple of items for FIREFOX, but they deal ONLY with cookies & history items, nothing more.

I DO truly appreciate all your assistance on this stubborn problem, but it just MAY be that there's something else going on here far deeper than meets the eye which will tie up your resources for a long time.

I had a similar problem several years ago with an editor for a particular PLC controller family. I had 3 DIFFERENT PCs, running various versions of XP (either the PRO or the HOME version). In the middle of editing a Ladder program, a window would pop up stating that the editor had "developed a problem", and WINDOWS would shut it down. There was NO escape hatch. IF I hadn't save my edits to the program, I would have lost them. This occurred on all 3 PCs at very inopportune times. I brought this problem to light with the folks responsible for the product line. It was part of a multi-billion $$$$ Japanese conglomerate. After months of testing & inspection, they could NOT duplicate the problem, even though I sent them a very large file of a clock-cycle dump of the CPU of the PC. So, IF we can't solve this problem with TB ver. 60, don't sweat it!!!!

MRC Compose add-on is known to cause this problem https://bugzilla.mozilla.org/show_bug.cgi?id=1502391

Hello Wayne,

T-BIRD 60 is running in SAFE mode, per a previous directive from one of you techies. And, I've checked the list of "Add-ons". The list is empty. In fact, I've never knowingly added an external program to T-BIRD, even in previous versions.

But, NOW I've discovered another anomaly. I received an e-mail from a friend today which had a series of "jpg" image files listed at the bottom of this PC screen as attachments. They were "cute", so I decided to FORWARD them to some other friends. In the previous versions of T-BIRD, when you do this, the attachments are automatically included in the new e-mail. However, now with T-BIRD 60, pressing the FORWARD icon ONLY opens a new e-mail screen, and there are NO attached files listed at the bottom.

LOOK!, without sounding upset or disgusted, I think that there are TOO many bugs, etc. in this version of T-BIRD. Please tell me how I can go back to the previous version (52.nnn), BUT more importantly, HOW can I KEEP it at that level, since I do not want to face this same catastrophe again in the future. Thank you.

I have closed the continuation of this topic at https://support.mozilla.org/en-US/questions/1241317

Petri_Dish said

Hello, I was hoping that my last post would elicit a response from the Tech team, but so far it hasn't. Since we've been back & forth with the Bcc: problem that I'm having with T-BIRD 60, I've asked IF there is a way or a link that I can retro download the last stable version, 52.nnn? When I went to the MOZILLA / THUNDERBIRD website, there is a page which explains the entire history of T-BIRD, and shows the last series of Ver 52.nnn and how issues in each level was addressed. However, when I clicked on Ver 52.9.nnn, the screen changed & prepared me to download Ver. 60.nnn, which IS the version that is causing me all the trouble. I hope someone can send me a link so that I can download a Ver 52.nnn, BUT MORE IMPORTANTLY, keep it at that level, so I don't have to go through this process again. P.S. As I explained previously, T-BIRD 60 is running on this PC in SAFE mode, with NO "Add-ons" attached, and yet the problem still exists. While I have two other PCs (both laptops), these are set up for specific uses, and I do not have ANY e-mail client active on either one. Thank you.

THANK YOU!!!! Now you're sounding like MICROSOFT which doesn't give a crap about their user base since they've dominated the world. Time to find a new e-mail client. I had NO problems with the earlier versions, I've done EVERYTHING that has been suggested, and this is your response...... you CLOSED the discussion. That's real professional of y'all! Have a wonderful THANKSGIVING!!!

Petri_Dish said

THANK YOU!!!! Now you're sounding like MICROSOFT which doesn't give a crap about their user base since they've dominated the world. Time to find a new e-mail client. I had NO problems with the earlier versions, I've done EVERYTHING that has been suggested, and this is your response...... you CLOSED the discussion. That's real professional of y'all! Have a wonderful THANKSGIVING!!!

yes I closed your add-on topic because this is where you had the attention of people trying to help you. If you do not want to continue that is fine with me, but really I think you need to re read what I wrote.

I also think this topic would benefit significantly from a copy of the troubleshooting information.

To find the Troubleshooting information:

• Open Help (or click on three-line-icon and select Help)
• Choose Troubleshooting Information
• Use the button Copy to clipboard to select all. Do not check box "Include account names"!
• Paste this in your post.

Now to your last missive about forwarded attachments. There have been issues or as long as I have been using Thunderbird with forwarded attachments. Primarily based on a definition of one word in the RFC. Microsoft choose to apply it one way and Mozilla at the time applied it another and it was open to interpretation and neither would back down. So emails with attachments from Microsoft mail programs often have issues when you click forward. The simple answer is to forward as an attachment, instead of clicking forward, click the arrow and select attachment.

Oh and I use windows 10. clicking write and changing to BCC they typing addresses into the BCC box works and pressing enter on the selected address results in another selected address field with BCC beside it.

However if I double click on the name in the address list f9) I get the address in the list, but BCC is converted to To: for the entered address. I have not read all of this lengthy thread, is it double clicking that is causing you issues or typing into the address field.

Matt. In a previous response from one of the techs, they mentioned something called an "MRC". Now, in your post, you mention RFC. I have no idea what these shorthand terms mean. I am in no way a WINDOWS "genius". I was far more competent using Hollerith cards to program mainframe computers 50+ years ago. This is ALL the information that I can give you. This PC is running WINDOWS 7 HOME PRO, which gets periodic updates from MICROSOFT. The issue of the Bcc: began a week or so ago when THUNDERBIRD automatically downloaded Ver. 60 to this PC. I NEVER had a problem sending e-mails to multiple recipients as a progression of Bcc:. My routine was to type in the first name or last name of the person I wished to forward it to, and press the ENTER key. The NEXT box would open as Bcc:, and I'd type in either the first or last name of the next person. I would continue in this manner until I exhausted the list of people who I deigned to receive the e-mail. This worked ALL the time, EVERY time with no hitches. That was in Ver 52.nnn. Now, for EACH person, I must go back to the mode box (To:, CC:, Bcc:) and select the one I want (Bcc:) AND then type the name as before. So, I've done ALL the suggestions that have been previously mentioned. I'm running T-BIRD 60 in SAFE mode. I've checked for "Add-ons"; the field is empty! And, still it works the same INCORRECT way. So, this is why I'm a bit disgusted with the whole upgrade, and all I want to do is to have a reliable e-mail client. WHY can't I get a link to go back to Ver. 52.nnn which worked just fine, and leave it at that????? Thank you.

Name: Thunderbird

   Version: 60.3.1
   Build ID: 20181113231517

   Update Channel: release
   User Agent: Mozilla/5.0 (Windows NT 6.1; rv:60.0) Gecko/20100101 Thunderbird/60.3.1
   OS: Windows_NT 6.1

   Multiprocess Windows: 0/0 (Disabled)
   Web Content Processes:
   Stylo: content = true (enabled by default), chrome = true (enabled by default)
   Enterprise Policies:
   Google Key: Missing
   Mozilla Location Service Key: Missing
   Safe Mode: false

 Mail and News Accounts
   account2:
     INCOMING: account2, , (none) Local Folders, plain, passwordCleartext

   account5:
     INCOMING: account5, , (pop3) pop.gmail.com:995, SSL, passwordCleartext
     OUTGOING: , smtp.gmail.com:465, SSL, passwordCleartext, true

   account6:
     INCOMING: account6, , (pop3) pop.gmail.com:995, SSL, passwordCleartext
     OUTGOING: , smtp.gmail.com:465, SSL, passwordCleartext, true

   account7:
     INCOMING: account7, , (pop3) pop.gmail.com:995, SSL, passwordCleartext
     OUTGOING: , smtp.gmail.com:465, SSL, OAuth2, true

   account8:
     INCOMING: account8, , (pop3) pop.gmail.com:995, SSL, passwordCleartext
     OUTGOING: , smtp.gmail.com:465, SSL, OAuth2, true

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I tried to send the data that you requested but I got a caution message alerting me that the file was over 10,000 characters, so I had to truncate the last paragraph of data. I hope that this doesn't negatively affect your research effort. Thank you.