Comment 14 for bug 895845

It fixes this very issue described above. The tank was drawn too low below the parachute, appearing disconnected (as the first picture shows). This was because the tank still thought it was connected to the Carryall. Carryalls usually don't support to drop their cargo in mid-air.

The shadow thing is not related to this, it's merely another thing that got fixed (it would only be visible if the unit is carried by a Carryall).

The Carryall branch has this fix applied also, thus, if you can't reproduce the issue if you follow the "Steps to reproduce", this is actually a good sign.