When walking through the cave with the switches on Heynton Pass later on in the game, coming from the south, there's one switch that won't work anymore. It does nothing. No dialog, no opening the gate.
I got that one, too. But I never reset or closed the green gate switch that first time. I just went through it this 2nd play-thru and hit the switch to close it. Will see what happens when I go thru again later...unless this is a glitch
I'll add another small glitch. When Fela is in Laymar in Corbers Enterprises, she's the only party member, yet you still get Marcus' portret when talking to one of the clerks.