I have lots of acronyms, some which are similar.
AC
ACS

I'm seeing unlinked mentions for things which don't match or TB is matching the first 2 characters and getting confused.

I also have an issue with the current version (.612.0) where AC exists as a thought and I can hover over it to get a backlink, but get no choices when I click Link Actions for the menu. My click seems to get ignored, even though the menu is presented.