Just to update, still happening.
I also took the opportunity with the "Commanding" feature in the newest version of ALiVE to check on the OPFOR Commander.

Not unit are attached to it, even tho there is plenty of "rhs_faction_msv" groups on the map.
Seems that blacklisting groups provoke the same bug.

Is there anything that could provoke such a bug? Groups are virtualized, registered by the Profile Handler with the right faction, they have their entity number and all.

Am I still the only one experiencing this?