Group level milestone filtering on Projects

I’ve got a Gitlab group with 3 projects - 1 for each of the teams. We’re making group level milestones so we can plan effort across the teams. I’d like each team to be able to just live in their own project and not need to go into the busier group-level view.

When I try to filter the issues list in each project by milestone:

  • I can see the group level milestone in the filter dropdown list.
  • When I specifically select the milestone itself no issues are shown
  • When I select by upcoming or started milestones then the filter works. As things stand, only one milestone is in progress at a time.

Am I missing something here? I feel it would be useful if the selected milestone did filter issues correctly.
Started or upcoming filter is ok - but it makes it more difficult to plan ahead.