Cannot use group board to assign an issue to another project-level team member, only group-level team member
Summary
I cannot use a group-level board to dispatch (reassign) issues, as my team members are only given access to specific projects, not to the whole group.
Steps to reproduce
I'm using 11.8.0-ee.
Create group-level board which includes issues from projectA.
Have personA1, personA2, personA3, personA4, ... be members of projectA.
Create an issue in projectA assigned to personA1.
Click on that issue in the board, and attempt to use the sidebar to reassign it to personA2. Dropdown doesn't contain personA2.
What is the current bug behavior?
Dropdown only contains group-level team members.
Even weirder, dropdown sometimes, but not always, contains members from other projects that are neither member of the group or that specific project.
What is the expected correct behavior?
Dropdown should contain the same users as those shown in that issue's detailed page.