Center of mass calculation incorrect (or absent) with another ship attached
I built a platform with 4 (hydrogen) thrusters at the corners, intended to carry and equivalent size ship (mining rig) down to the planet surface. When the carried ship is attached (landing gear), platform behavior is inconsistent with physics. Activating only the two back thrusters, raises the front of the platform more, flipping it over. The positioning of downward thrusters doesn't seem to effect this behavior.
The only workaround I found is to add a large gyro to the platform, which seems to stabilize the anti-realistic torque on the ship (although not eliminating it completely).
Another issue with the same build - platform does not maintain altitude with dampeners enabled, even though there's plenty of power in those downward engines. Also, seems like when I thrust forward, the downward engines shut down completely, making the platform fall down while I thrust forward. This behavior seems to be also related to having another ship attached.
Detaching the ship, all described issues go away.
I have the same bug 
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