I encountered a glitched Sigil, and after a quick search, saw it posted that there is indeed a possible glitch to not being able to pick them up. Not sure how many gates appear, but had 11 closed with no issues. Meanwhile, I obtained the Oghma Infinium. So I used it, found a new gate, and immediately encountered a glitched Sigil. Figures as it was a tiny area lol. But when I loaded the previous save, I hadnt read the book, and the gate, tho changed, didnt glitch. Is the book a trigger or is it just random?