Safari bookmarks are now a nightmare as well. The sidebar automatically reverts to root every time it's closed.I should probably start another thread for this question but I figure respondents in this topic will be hyper-aware of this issue and be more likely to know the answer.
Q. Is anyone able to tell me if Safari 15 in macOS Monterey 12.0.1 has this same broken sidebar? If so then I will not be upgrading any time soon. Or ever. I can't be doing with having my Mac browsing also ruined.