[oo_jazz_oo]

That didn't really fix it.

Now, when you scroll the tiles, the error shows for a split second, then disappears.
But it still shows when you scroll...it just...goes away. xD

I also noticed, when first opening gonstruct, instead of showing the "multiple window" error in the screenshot posted, it shows the grey block I posted about.
Then, if you resize the window, the error with the "multiple windows" showing in the tile area appears...