When I place LHD in Eden editor with vehicles already on it, they jump around and in most cases they explode. That happens with every LHD which already has vehicles on it. LHD which is empty works perfectly fine.
How to reproduce problem:
Go to Eden editor>Place any LHD which already has vehicles on it
In the past I fixed the issue myself simply by placing the LHD first and not moving/rotating it from initial placement in editor. I don't know if that still works now as I haven't really had a need for the already equipped LHD in a long time but I would still attempt it as a temporary solution if you need it.