Nested tool panels always open on the other monitor
This has happened on two devices with dual-screen setups recently and I have no idea what the cause is: whenever I expand an tool in my toolbar to select other nested entries within it, the expanded menu/dialog opens in the other monitor instead of just expanding to the right side of the toolbar. When I moved the main window, thinking that it's just one of those "Photoshop shows the dialog" on the original/main display, the expanded dialog just.... switches to the other monitor.