I cant drag and drop any more in finder somehow. it was working fine, now it works and then i have to restart or it is not working at all. what a mess
Rather than rebooting, I just kill "pboard" in Activity Monitor, and afterwards restart a few GUI programs that were directly affected (including Finder and Dock.)
My wild theory is that Firefox is the culprit. At least the issues happened more frequently once I had to switch to Firefox for proper content blocking extensions. Anyway… I have no idea how to prove that, so it's just a guess, not a blame.
Many people have complained about how hard it is to find a safe place to grab windows in Tahoe when you want to move them, though, and I absolutely agree with that complaint.