Hi Jochem,
Thank you for the update.
I am not seeing anything incorrect with your settings.

Please delete the old entries and if this keeps happening for new tabs too, Please let me know. I will like to investigate further in that case.

Regards
Brajesh

• This reply was modified 4 years, 1 month ago by Brajesh Singh.

Hi,
Thank you for the clarification.
I assume you are trying to apply 2 member types to a user? Even though it is possible to assign two member types, It is a source of trouble(removing, assigning , appending member type(s)) and that’s why you will not find a proper implementation for this.

Regards
Brajesh

Please try doing 2 small changes

1. In the main tab, Please put a numeric value (e.g 25) for position
2. In the sub tab, Please change slug to something else. Try making it different than the parent and make sure to put a number for the position.

Please let me know if it works for you or not?

Regards
Brajesh