I'm a StartIsBack++ user on Windows 10 21H2, with StartIsBack version 2.9.20.
Sometimes the event shown in the video will happen and my taskbar will get stuck in a "hover state". In this state, taskbar items will remain highlighted and they will show their tooltips, even if I move my mouse away or click around.
I have uploaded a recording of this event to two different places. They're the same video. You can see what's happening very clearly, where I'm clicking around and dragging windows around and the tooltip for Firefox is still showing. It's kind of frustrating when this happens, and seems to randomly stop happening after a few minutes of using the computer normally.
Link 1: https://x0.at/Oaa1.mp4
Link 2: https://files.catbox.moe/8png2h.mp4