I think this issue is bigger than what I thought and not related to checkboxes or my jQuery at all. It appears to be an odd conflict with dropdowns in a list field over 12 columns. I’ve seen similar when using the drop down plugin. the User Interface seems to muck things up:
What I am seeing is that in my 13 column list field, starting on row two, it seems to shift the data back by one. On row three it get’s shifted by two, and row four it gets shifted by three.
So 13 is not my lucky number! I even then tried to add a 14th and it still throws the error. When I remove that column, the issue sometimes goes away.
To find the error I have… completely removed my jQuery scripts, systematically disabled my snippets, ran through my plugins and disabling and enabling them one by one, and recreated a test form. I then dismantled the test form until I narrowed it down. It has been a sucky week trying to find this.
In the test form, initially, it does allow all 13 columns with pagination. the dropdown UI seems to gunk it up at a certain point. I’ve contacted the creators and am hoping for some help, otherwise I need to find a crafty work around… Oi… I have my test form back up with a sample of it on there if anyone is interested.