When trying to add a new record to a many to many relationship (by clicking on "add: <entityname>" button and afterwards "+ create record") a message pops up "Do you want to leave this site?" Than I get redirected to a new form for creating the required record but after creation it's not associated with the related record of the many to many relationship.
When using classic UI this was done automatically. Do I miss something or did the behaviour change in UUI?