Main canvas frozen/not updating

hi, I’m experiencing a weird situation where my main canvas is completely frozen and won’t display any brush strokes when I draw with my pen tablet, even though my layer opacity is normal and nothing is locked. Strangely, the strokes are actually being registered because they show up and update perfectly fine in both the Overview panel. Does anyone know what is causing this rendering/driver issue and how to fix it so my main canvas syncs up again? Thanks in advance!

Perhaps you have the sense issue as in this topic.

Check if any of the proposed solutions help.

In your case it sounds like a reference image is covering the whole canvas.