Cursor/UI/Tooltips Bugged
I'm on OS 10.15 Catalina, but this bug has been around since Mohave. Normally when you mouse over certain things, the cursor should change contextually, and sometimes the UI of the window will change as well to give you feedback that you're over it, right? Like when you hover over the "Close Window" button, it goes from red to red with a black "X" in it, or if you hover over the edge of a window it changes to the <-> "resize" arrows.
For some reason, the UI does not update, or does only once and not again, until the mouse is clicked. This includes navigating drop-down menus, contextual cursors, art program cursor updating, and tooltips. All apps, windows, the Dock, and webpages, no exceptions.
It is not crippling my ability to use things, but it is making everything rather fiddly and unintuitive.
EDIT: I tested the bug with Safe Mode to see if another app was causing it, the bug still happens consistently. It is not being caused by another app.
iMac 27″, macOS 10.15