I can confirm that the method I described in this post does not always cause the bug.
I have observed this bug mostly on Jaku. I have a theory that this bug is caused when two separate objectives (e.g. the first 2 areas on stage 1 Jaku) are completed/lost simultaneously. Then one hexagon will remain in the middle of the screen till the end of the match.
I am 100% sure now that a simultaneous objective completion causes the bug (saw it during the 2-nd phase of Yavin after our imps team captured both areas at the same time). Maybe it's a possible deadlock for one of the hexagon markers to remain on the screen.
