I've stumbled across what I assume is a bug, a bug I hope we didn't create.
There was some data in the Magic Animations table.
After looking at it in a Hex Editor, it turned out to be edited text.
So normally FEBuilder isn't supposed to write any data into tables, would be stupid after all, right?
I tried to fix it by repointing it again, without the messed up data of course, didn't want to mess the text up. But then I realized that despite repointing it to 255 slots, it was back to the 180 again that it had before.
And trying to write into the data after the 180 slot was considered out of range.
So clearly it didn't repoint correctly.
I went back to a version before all this mess happened, where it only had 173 slots and tried to repoint there just out of curiosity, only to be greeted by the same results after expanding the table.
Could this have somehow been our fault or does FEBuilder not properly recognize the Magic Animations table as table?
I think the fact that it wrote text in the empty space there is already concerning enough.