Ok after messing around I found a solution. It seems that if you have fractional scaling turned off in the gnome settings for displays then you have the problem described here. But if I turn on fractional scaling and set it to 200% (same as when I did not have fractional scaling turned on) then things work as expected.
So this works as expected (albeit with some really minor artefacts that show up very rarely and disappear quickly)
But when you have this you will get the problem the original poster explained:
