
Header pane is blank in POP after Thunderbird 68 "upgrade"
Title says it all. Nothing at all in the header pane, though the space is there.
Chosen solution
It could be caused by an incompatible add-on or broken layout. To test the latter, launch in safe mode, check 'Reset toolbars and controls' and click 'Make changes and restart'. If that doesn't help, you will have to disable add-ons one-at-a-time until you find the source of the problem.
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What does it look like in safe mode (hold Shift when you launch TB)? Does it happen for all folders?
Thanks for the response. In safe mode the header is there. The problem appears in all folders.
Chosen Solution
It could be caused by an incompatible add-on or broken layout. To test the latter, launch in safe mode, check 'Reset toolbars and controls' and click 'Make changes and restart'. If that doesn't help, you will have to disable add-ons one-at-a-time until you find the source of the problem.
Thanks. I did your suggestion for broken layout, and the problem is solved.