I was auto-updated to 78.4 and decided I wanted a larger font for my messages. None of the extensions were compatible with thunderbird 78.4. I grant you that I have only donated a few times to thunderbird activities and could use to do more, but I feel lie 78.4 should not have been deployed without the most popular extensions being compatible. Thank you to everyone who has kept TB going, but........ I would gladly return to yesterday to get compatibility...especially for provider for google calendar.