It was deduced that it wasn't a UI issue, so another player suggested that I post in the Tech Support forums.
Lots of other people were having the same issue, and in another thread a Blue replied:
03/11/2013 01:14 PMPosted by OmrakosI'd recommend posting this issue in our Bug Reports forum instead of here. I'm not able to reproduce it myself nor has anyone I've mentioned it too and that's really the only way I'd be able to help in here. When reporting, be sure to mention you've eliminated addons as a possible cause already by deleting or renaming your WTF and Interface folders.
So, here I am! :D
Ever since 5.2 came out NPCs are trying to ignore me. I sometimes have to click on them 2-5 times for them to actually open their dialogue/quest windows for me.
Sometimes when I click on them nothing happens at all except for their sounds and movement (they will say hi or whatnot, and turn to face me, and move their hands/etc while talking).
Other times they do all of the above, but their window flashes open for a second and then immediately closes.
Eventually their window will open like normal and I can turn in or pick up a quest, vendor items, etc. If I'm lucky this will happen on the first click like it's supposed to, but it's much more likely now that I'll have to click on them at least 2-3 times (sometimes as many as 5) for it to work.
I'm not getting any LUA errors, and I've already tried clearing my Cache/WTF/Interface(including addons) folders, and even with the default ui I'm still having this problem.
Is anyone else experiencing this all of a sudden?
Another user tried to help me out, but it's still happening despite everything we tried.
I have tried logging in with addons disabled, with the Cache/WTF/Interface folders cleared, I've checked to make sure no one else is logged onto our wireless, my world and home ms are both fine (52-54 for both), and the patch is fully downloaded and installed (I didn't log in until it was 100% done).