I first noticed this when upgrading to 1.1, but it still happens in 1.1.3. I’m on a Mac, I don’t know if that matters. I’ve tried undocking and resizing in every way I can, but it still shows up like this.
Yeah, thanks for reporting this issue. Unfortunately fixing this took way more time than it should have, because it involved a lot of trial and error and I’m very clumsy on macOS regarding keyboard shortcuts… and once I had the rendering issue fixed, I still had a clickability issue to solve…
Anyway, here’s the fix I just pushed which will be included in Tiled 1.1.4 and the next development snapshot:
https://github.com/bjorn/tiled/commit/47cf260605aeeac21429dbcec1bcde2a5bc6f643