I love the game. I'll start off by saying that. It's a great challenge. I've gotten oh so close a number of times only to have have the world ripped apart and my investigators torn asunder. LOVE IT.
However, there are a few bugs, but the two that 'bug' me the most is that in any game I play at some point the Yellow Glyph and/or Red Glyph start going grayed out and I can't access them or use them at all during the game. Related to that is there is one glyph that says you can use it to get the Red AND Yellow glyph but about 80% of the time it only gives me one of them.
I do apologize if this has been noted elsewhere. I read through the forum and couldn't find mention of it.
By the way it happens in both my iphone version and the stand alone app version for my desktop (yes, I love the game so much I paid for both versions.)