Yeah, the threads have been merged, as there was very much overlap between the threads.
Bookmarks: That’s odd, I am not aware of any change, which could have caused this. Please send a bug report about this, if this is still happening. It is quite likely that this would also happen on Windows, if this is indeed a bug.
Issues 2-4: This sounds to me like some modifier key (shift, option, command, control) might got “stuck” somehow. We had such bugs in the past, but I have not heard about this for some time. Could you check if this is still happening after restart? In this case it would be also good to send a bug report about this.