Nah, my character has Mirror’s Reflection. So I can get through any window just by duplicating and then un-duplicating myself. I’ve skipped trays that way and opened doors for my group using it.

Worst thing that’s happened is a triggered a monster that one-shot me. From my team’s perspective I tried to duplicate through a window and instead just fell down unconscious. If I’d rolled better initiative I could’ve seen it and un-duplicated before it had a chance to do anything.