i have the pc version
In Assassins Creed 3, I am stuck in the Boston gate magic lantern puzzle.
The one I'm talking about is the one farthest to the left. I know how you are supposed to solve the puzzle, the problem is I can't seem to see the symbols. I have all the other doors unlocked except for this one.
I mean instead of seeing this:

I see it without the symbols. Pretty much what the door used to look like, almost like this

but zoomed in and with the directions like you would normally get
Am I the only one experiencing this? Is it a glitch? If so, what can I do about it?