i think its connected with the problem, that they are not designed to swim above water...
in the fmb, some of those hangars and lighting houses sunk when i placed them...but moving them a millimeter, made them swim again.
you can see in the vid for example that a few lighting houses are half sunk in the water, and only the top is above the surface.
the problem is though, that when one plays the mission offline, its exactly how it looks in the fmb, but if you record a track with the ingame video tool, then you will see what others will see when they join the mission in the lobby...
some lighting houses were totally invisible for them, but they could still collide with them.
and some hangars on the other side, were as well invisible for them but they just could fly through the walls and roofs...but not so the host....for the host, everything is visible and collideable.
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