Just this morning when Thunderbird opened my inbox was blank. I toggled up to the account, and then back down to the inbox, and it loaded all my emails (the Get Messages button didn't work for this). However, it doesn't last. I timed it before and it went blank again after about 10-minutes. Also, when I open a new email and it opens in a new tab, that tab will get exed out after about the same amount of time. Anyone else having this issue? Version 78.6.1 Build ID 20210107201950 OS Windows_NT 10.0 Server Type: owl Server Name: outlook.office365.com