i just tested this here: https://lemmy.ca/comment/2308379

and am seeing the same issue. deleting the root comment removes the entire comment chain. i didn’t notice it at first because (i’m assuming) i’m an admin and can see deleted posts/comments, but when I checked it when not logged in the entire comment chain was indeed gone. and once i un-deleted the comment it was back.

i then deleted a non-root comment, and now it behaves even differently, with a link saying “2 more replies” but when you click on it it just spins forever. will check to see if there’s already a bug related to this issue and report back.

edit: created an issue here, couldn’t find any existing issues: https://github.com/LemmyNet/lemmy/issues/3886

second for aCalendar+. been using the paid version for a few years now with a self hosted nextcloud instance. works great! works great with other calendars too (google, etc).