I can confirm what you observe. Upstream builds exhibit the same visual aspect though, so it seems it's an upstream design decision. Would you mind filing an upstream bug at https://bugzilla.mozilla.org/enter_bug.cgi#h=dupes%7CThunderbird and sharing the link to it here?
** Summary changed: - folders window in v78 has excessive vertival spacing + folders window in v78 has excessive vertical spacing ** Summary changed: - folders window in v78 has excessive vertical spacing + folders pane in v78 has excessive vertical spacing ** Changed in: thunderbird (Ubuntu) Status: New => Opinion -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/1899479 Title: folders pane in v78 has excessive vertical spacing Status in thunderbird package in Ubuntu: Opinion Bug description: comparing the folders window between the versions in focal and groovy, the folders window has an excessive amount of vertical spacing. Is there a way to reset that to the previous settings? I see this as a regression, not seeing the amount of folders on the screen as before. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1899479/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp