I'm getting the error "Tukui has been blocked from an action only available to the Blizzard UI. You can disable this addon and reload the UI. [Disable] [Ignore]". Sometimes it triggers immediately upon opening the guild window, sometimes it triggers the moment I mouse over the guild window frame, and sometimes it's only triggered when I edit (and accept) the guild message of the day. I am able to reproduce the issue with only Tukui enabled, no other mods.

I'm actually seeing people attribute this to a number of other mods, perhaps it's a bug in the API itself? Not sure.

I've generated a taint log at level 2, but it's too large to paste into a comment, so: https://pastebin.com/X2dduF5V