We think it's an issue with zoom level on certain browsers -- basically if zoomed in or out and not 100%, it will make an error. I think we have a fix and will try to get that in!
I can confirm that this is not the case. My zoom is at default using Window 10 and Firefox. The resolution of the game is stuck extremely small and this same error pops up. Edit: Actually the error goes away when I zoom to 120%
I think we have a fix (pixel perfect setting needed to be turned off) but we still need to test it. Thank you for providing more info! I was having it disappear at certain zoom levels too, and only in chrome for me (not brave or safari).
