Not sure. I haven’t ever used the group field actually, but checking it out on the docs now it looks really handy.
I am currently chasing down some other bugs with the plugin when multiple conditional fields are set it gets pretty cranky.
I will take a look at this and see if I can figure out what is going on with group fields too.
To clarify, is the issue during the field creation while setting the conditional terms. Or is the issue when the fields are being used to enter content while editing a page/post/etc.
