[PvK]

Sounds like probably a change in 1.84 has ground combat randomly damaging non-troop cargo, the report below is correct about some mines being destroyed during a ground combat round.

What would probably be good to test, then, is what if you build weapons platforms with lots of shields or armor, but no weapons. Planetary bombardment will stop short of killing them (I've captured such WP's before in 1.78), but the troops - will they now have most/all of their shots hit these tough WP's instead of the enemy troops?

PvK