When attempting to hide threads, you will often hide the incorrect thread.
What appears to be happening is that when you click on the hide thread button, it uses the current position in the list you're on to determine which thread to hide. If the order of threads in the list changes since the last time you loaded the page, the wrong thread will be hidden.
Example:
Clicking on Hide Thread for Proposed Class: Myrmidon
Deep 6 FaWTL is hidden when before it wasn't.
