Yeah, we just caught that one, and will get a fix out shortly (maybe tomorrow or the day after). You can avoid it by turning the Ruler off (⌘R). So it’s an easy one to get around in the main project window.
It’s going to be more of a problem anywhere there is text that has a ruler you can’t turn off though, like in compile settings where formatting is changed for sample text. You’ll just have to switch to light mode temporarily, if you need to use one off those areas, for now.