[PsychoTechFreak]

maybe this is an undesired byproduct of the change to kill WP's first during a planet capture???

I don't think so, my laptop SE Version is not yet patched and I always have seen the same issue. Planet capturing with or without bombardement resets planet cargo. Sats and mines are not launched during combat (maybe intended?) as far as I recall, just drones and fighters.

OTOH, what if planet cargo would be completely filled with units? Where do your troops go in this case?