I recently upgraded to 3.9, and since the upgrade I've noticed that the last columns in my projects are cut off. It's like this for every project. I'm guessing it's a bug, but I'm not sure where to report it? If it's not a bug and there's a fix for it, please let me know!
EDIT: I forgot to mention that I'm on a Mac (running Sonoma).
EDIT2: I had a colleague check it on their windows machine and it's doing the same thing. It only happens though when you have many columns and have to scroll over. The behavior is the same in both Chrome and Firefox.
EDIT3: If you add a new column to the end, and then delete the new column, the last column is no longer cut off. This definitely seems like a bug, but I'm glad I found a workaround until it's fixed.