When using engine embedded in a kie-server packaged as a SpringBoot app, the bean defined as `userGroupCallback`is not being injected/propagated to the engine and therefore when trying to call some of the rest endpoints fetching some tasks based on the user/groups assigned to them (such as potOwner, stakeHolders, businessAdmin, etc) won't work as expected since the UserGroupCallback implementation used in the engine will be different than the one defined at the Springboot app level.

This is only applicable to cases, not to processes