Well, it seems, popups are aligment to define map angles. It means that if I looking on map "right" - it's ok, as I see everyhting and can work with everything.

 Unfortunately, as I am rotating map now and again, I see it "wrong". In my cases popups mix with square in question, obscure visibility and causing glitches. Like that:

As you can see, tooltip close object in question almost completely. Moreover, in game there is a sword cursor over it, and tooltip blinking annoyingly for every cursor movement.