Unwelcome change to Thunderbird

[Ralf Mardorf]

On Fri, 24 Apr 2020 08:38:49 -0500, Jim wrote:
>Yeah, Colin is right. I should have made that statement about
>something in the old profile is keeping my changes in userChrome.css
>from working.
>
>I'll probably spend a little more time trying to figure out what is 
>causing it. If I can't I will just move everything to the new profile 
>and move on.

First of all get rid of cached configurations. There are probably files
in a path $HOME/.cache/mozilla/ or similar and/or /tmp/.

List all profiles and cached things, perhaps there's an issue with
permissions.

You could try diff to find differences. I don't know where thunderbird
does store it's profiles configs, there probably is a path
$HOME/.mozilla/thunderbird/ , if so run

diff -r .mozilla/thunderbird/profil1/ .mozilla/thunderbird/profil2/

replace profile1 and profile2 with the correct names.

If diff leads to nothing

copy -ai .mozilla/thunderbird/profil1/ .mozilla/thunderbird/profil_1.bak

and remove (delete) suspect files, maybe thunderbird generates new
files. Before doing so, close thunderbird and after that start it
again.