Debug window behaving strangely

I just noticed this in my debug window. When it's separated, I don't get the red area that indicates breakpoints.

I forgot I had one and the game froze and it wasn't before I set the debugger back to the game preview I saw I had hit a breakpoint. I could step through there, but not when it was on its own, just grayed out. Anybody else seeing this?

It looks like a bug. It's best to report such things to the issue tracker following the guidelines.

Indeed, will do when i get the time :)