Area name markers disappear when returning to maps in hubs

[mmaulwurff]

Submitted by ramon.dexter on ZDF.

How it happens:
I create a map, place number of the m8f_hn_AreaNameMarker_*s to said map. Let's call this map map1. I make a map2, place areanamemarkers.
I make it a hub, that's important here.
I playtest it. Start in map1, areaMarker names show correctly. I go to map2 from map1. AreaNames still show correctly. I return to map1 from map2. AreaNames are gone! only 'outdoors' is shown. I try to go back to map2 from map1, and the same as in map1, areanames are gone, only 'outdoors'.