This is a niche one and will likely not affect any of the (three?) people playing with Kitten¹ right now but, in any case:
If you persist custom types to your Kitten database, you might be hit by this bug that was introduced when I released versions of Kitten with minified identifiers.
I briefly wrote about what happened, how you can identify if you’re affected, and how you can fix it here:
https://codeberg.org/kitten/app/issues/160#issuecomment-1775375
