mwha, NTai never dguns enemy commanders unless it's a mistake.
in XE8.1 isntead of sitting there however it will attempt to reclaim your commander, and capture anything it built nearby, unless there are units with weapons nearby in which case it dguns them
The NTai commander is meant to be used as a horrible nightmare for the player, only that nightmare is more of a pleasant dream, in XE8.1 that has all changed ;D
I downloaded and installed the last linux-data but there is no changes. Perhaps that the problem comes from ntai...
Anyway is it planned to implement the last version of the AI?