IPadOS 13.5.1 Mouse Can’t Move the Slide Over Window

Hello, before I update the OS (Now I have iPadOS 13.5.1) I could use the mouse to move/close the slide over window. I now can’t even grab ahold of the window to move/close it. I can use my hand/fingers to slide windows around. The mouse works with other things, like clicking on icons to open apps, etc.