Troop Battles kill Multiplayer

Description

In a simutanieous Multiplayer game I have a large fleet that includes a troop carier.
If I invade a planet with the troops the game turn process freezes up near the end of its processing.
That is the processing line is close to the end of the line.

If I go back a turn and Not send in the toop ship the fleet goes in . The turn process. And the planet is killed off.

I seem to recall seeing something about a combat bug that related to trying to land troops on a world that had been just killed off during the initial bombardment.

I will try just sending in the troop ship with less support to see if I can invade without killing the planet.