Yep, otherwise the gate to the area doesn't open. I'm pretty sure I'm all set, this is a graphic glitch for sure. Unfortunately, a Google search didn't provide any results. So, chances are I'm stuck with a very specific problem.
I'm sorry to ear that, and yeah, it does sound like a weird glitch.
I'm sorry mate, but short of restarting the game or even unistalling/reinstalling (just in case), i'm not sure what else you can try...
Believe me, I've tried everything including rebooting, changing resolutions, tweaking advanced options ingame and Nvidia Control Panel. Nothing. I'll wait and see if GOG comes up with an answer. I'm not holding my breath, this does look like something unique. Anyways, thanks so much for helping!