Incompatibility with Formcreator
Please see the following issue related to Formcreator.
A user submitted a patch for Behaviours to solve the issue. I'm forwarding here.
#1 Updated by yllen over 2 years ago
_groups_id_requester is always set.
If empty it set to 0 in the core.
Test for <=0 is for ticket creation from webservices (a mistake can be set in value passed)
If Formcreator doesn't define value as the core it's not a Behaviors error.
But if it can solve users issue, i added this control.