[5E Shaped] Possible bug

There may be a bug which can be caused by taking a spellcaster, trying to add a spell, leaving that spell slot empty, and then turning off the green "Spells" button.  If this is the correct sequence, then the result is to effectively disable the "+Add" button from adding new spell slots. The sheet being used is v11.0.3.

Here's Kryx's issue tracker

I have tested it in the same game that it occurred and this does not produce the same problem.  I tried various combos to get it to fail, and could not. The original buggy sheet still has the behaviour that mouse changes to indicate that Add is active as a button, but fails to do anything on click. I can see nothing odd in the visible attributes. Unless it happens again, I think this has to be marked down to database corruption.