It is somehow related to the browser windows size:
Window maximized on 1080p Monitor:
Everything blurry.
Once I make it a bit smaller:
Everything fine, but it kind of oscillates (between sharp and blurry) when reducing the window height.
Maybe that helps finding the issue?
I just ran into this, but only after I added a Stepper List Item as the default widget to a SetPoint in the location. Removing the Stepper seems to resolve it.
So if anybody has more information (e.g. how to reprocude it, example code that always blurs) i think it would be good to add this information to the issue