FreeOrion

I've noticed this a couple times now. The AI arrives with more than enough troops
to successfully invade one of my planets, but for some reason it does not use all
of its troops and the invasion fails. Next turn it invades again and is of course
successful. Weird.

If you could provide a savegame and/or AI logs which demonstrate the issue, that would help a lot in checking what is going wrong.

Sorry, I went too many turns past it for a save game.
I will keep an eye out for this in the future and post logs then.