搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多

Weird behaviour of SHIFT

  • 4 回覆
  • 1 有這個問題
  • 1 次檢視
  • 最近回覆由 ayrat

more options

Whenever I press SHIFT in twitter message form, or on forms of some other sites (but not in this form), I get weird behaviour, like:

  • removal of the previous symbol, or
  • acts like i pressed HOME, or
  • does not type the symbol at all.

GIFs are attached (in twitter):

  • in one of them I literally type <write SHIFT> but get only <write F>
  • in another I type <press """"">

(ignore symbols < and >)

This behaviour is in *safe* mode already. Related is this unanswered reddit thread: https://www.reddit.com/r/firefox/comments/7jdmll/firefox_57_issue_shift_key_deleting_text/

Chrome works perfectly; ~one year ago, firefox worked perfectly.

Firefox Quantum 61.0.1 (64-bit), Ubuntu 16.04, T420 thinkpad laptop.

Whenever I press SHIFT in twitter message form, or on forms of some other sites (but not in this form), I get weird behaviour, like: * removal of the previous symbol, or * acts like i pressed HOME, or * does not type the symbol at all. GIFs are attached (in twitter): * in one of them I literally type <write SHIFT> but get only <write F> * in another I type <press """""> (ignore symbols < and >) This behaviour is in *safe* mode already. Related is this unanswered reddit thread: https://www.reddit.com/r/firefox/comments/7jdmll/firefox_57_issue_shift_key_deleting_text/ Chrome works perfectly; ~one year ago, firefox worked perfectly. Firefox Quantum 61.0.1 (64-bit), Ubuntu 16.04, T420 thinkpad laptop.
附加的畫面擷圖

由 ayrat 於 修改

所有回覆 (4)

more options

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window

Try the Firefox version from the official Mozilla server if you currently use a version from the repositories of your Linux distribution.

more options

As I wrote in the original post, I tried the safe mode.

I just now tried the default theme (in safe mode) and a latest version from the server you mentioned.

The same problem.

I also tried a new keyboard, the problem persists.

more options

Too bad that SHIFT works fine in Chrome, otherwise we could blame it on your device (not necessarily the keyboard, but the motherboard) .....

See these search results

Question : Does SHIFT behave the same way on the on-screen keyboard  ?

more options

Thanks for reply. Yes, on-screen keyboard produces the same results. Just recorded the video of the twitter form. The same for right-shift. CAPS lock works as expected.

由 ayrat 於 修改