Super weird- make a select field, value/lable. For your options:
If you go to the entry, select either 0 or 1 and it grays out both and worse, if you save it, even if you pick 1 it goes in as 0. It only happens if you start out with not 0 at the start. If I remove -- row from the top option, it works like normal. If I change -- to None string... it still breaks!
