I'm getting "Uncaught TypeError: self.currentRule is not a function" for lines: 319, 323 and 425. Form then just breaks and has no data for entry. Commenting out those lines lead to a cascade of further errors so I won't bother.
I'm fairly convinced this is related to me running on Linux but I can't test on native windows currently so I will need someone else to confirm if it works. Happened both on firefox and Wine IE.
Thanks for this. I hadn't tried loading it without any saved rules in a while. This issue wasn't related to Linux, just poor testing. I've updated the post in https://f95zone.to/threads/monster-black-market-v2-0-16-0-dlc-team-apple-pie.124772/post-11311653 with a fixed version.