Let's say you have Group A & Group B, and two contacts, Contact A and Contact B. We want our search to find those contacts who are in both Group A AND Group B.
For example, if Contact A is in Group A only, but Contact B is in both groups, then the result of this search should be 'Contact B'.
Search builder looks like: Contacts, Group(s) = Group A Contacts, Group(s) = Group B
Result: no results.
No errors are logged.
We had several groups built on searches of this type, but after updating from 5.6.1 to 5.10.3 these all broke and began returning no results.
I have tested this on the Demo site but could not reproduce - however the demo site is running 5.13.alpha1, so it's not a fair test.
The release notes for 5.11.0 indicate some search fixes, but not anything that would make me assume this would also be resolved. I wasn't able to find anything in Gitlab about this either. I'd rather not wait for 5.13 to be released so if someone could possibly point me to a specific patch that I could test in the meantime, that would be fantastic.