Not sure if you figured this out or not (or if you care at all by now lol) but I'll just post this in case someone else has the same problem. I got that glitch when playtesting the game using Yanfly's grid free doodads (in my case at least, I noticed by turning all the plugins on and off one by one). I've deployed the game and it's gone though, so it's not much of a problem in the long term, imo, just a bit annoying to see when you playtest.
I would like to ask a question about the plugin. Is there a way to make the cursor blink/change the opacity when the window in which is showing, is not active?
For example, when there is more than one window with options (like the Item menu, when you need to select the category and then the item selection window). Something to avoid mistakes when selecting options between windows, since the cursor will still show on the inactive window.
I hope you can help me with this. Thanks in advance!