Welcome Screen Requires Two Clicks to Open Recent Project

When I launch Premiere Pro, I am greeted with the Welcome screen showing my several most recently opened projects.  When I click on one, nothing happens; I have to click it again for it to open that project.

I am on 23.5.0 Build 56 on Windows 10 Pro 22H2.  To reproduce, launch Premiere Pro and wait for the Welcome screen to appear.  Click once on any project.  I expect that project to open, but it doesn't (until I click it a second time).

I did some experimenting and this appears to be related to window focus. If I first click anywhere on the welcome screen (e.g. in the blank space to the left or right of the recently opened project list), then clicking on a project opens it right away. If I click on a project first, then click on the title bar of the parent window (Premiere Pro proper), clicking on a project won't open it (it requires a second click).  I also sometimes see a hint of a drag placeholder (as if I were dragging the project); although I have four pointing devices (tablet, trackball, and two mice), I've tried having each plugged in without the others to rule out any sort of "fighting" between them.  See attached video for examples.

Happy to try any other ideas in case this is something specific to my system.  Thanks!