No it's happened without super traffic board . It would be like if i started out a flight at KRNO and then went changed my view to a AI plane at KLAS FSDT
But that's NORMAL and is how is supposed to be. Buildings appear or disappear depending on the position of your airplane, not the position of your eyepoint.
If they were created/destroyed depending on the position of your eyepoint, there would be annoying pauses when creating/destroy all objects at each change of view, if the eyepoint would be outside the scenery range, and if we increased the scenery range to be as large to cover the "AI bubble", which is about 200 NM, our airports would take away previous VAS space even if you are away from them, which is what happens with regular .BGL files: they are loaded *way* before they are really needed, but there's cost in memory.
Your first description of the problem was that if you were at FSDT KDFW, then switched the view to an AI on another airport, then back to KDFW, the building disappeared, and this is a different case, and shouldn't happen, because your airplane was never outside the KDFW loading range.