This is how I discovered this bug:
I was making a custom bait item, I couldn't edit the Action Flag stuff, logic, since they were labeled as "<unused>". Now, the custom bait appears as a L1 sword when used. Not good. So I checked and compared it very well with the standard bait. At the standard bait, all of those Action "Flags" are labeled as "<unused>" as well, but the first one isn't the L1 Sword, but bait. I can't edit it either. I assume this is a bug?
Also by "flags" I mean those dropboxes (there are 10 of them).