Not sure exactly when this started but I just noticed it yesterday- when you double click in the project window or go to file>import to bring assets into a project hitting command + a currently isn't functioning to select all from a folder. Edit blinks in the menu bar, so the program sees that you're entering the command but files don't get selected.
This still seems to work fine in photoshop, so it's something specific to premiere at the moment. On a mac with Ventura 13.2.1