My setup:
I have a single JIRA project. In Portfolio, I create 3 separate Teams - one for Front End, one for Back End, and one for Design. In each of those teams I added the relevant resources. I gavce each resaource the appropriate availability. There are no shared resources across these 3 teams. All 3 teams have the same Board set as their source.
The Issue:
Portfolio seems to be dumping ALL tickets into the Back End team for most Sprints. This includes our current active Sprint, in which many stories are absolutely assigned to people on the Front End team.
I cannot for the life of me figure out why this is happening and, having spent the last ~2hrs+ tinkering and researching, I'm ready to concede I need some help :P