Hi, Mauricio here,
everything worked fine until 3.8.97. After updating to 3.9.88 or 3.9.89, everytime I go full screen or I maximize the Spine windows my screen goes black for a milisecond and then goes back on when I change the focus from any other window or desktop to Spine and viceversa. I guess that should only happen if I work fullscreen, but with a maximized windows it happens too, so both works like if I were working with a fullscreen app.
I'm using windoes 10 with two monitors and I extend them. I work on monitor 1.
Thanks!