It was in a cave and on placed on 'rock' so not on a foundation, actually two barrels got destroyed but one dropped the loot, the other with all my components didnt drop any loot that I can find, even picked up everything nearby and broke any wood or twig foundations to try look under them.
Then when I upgraded a twig triangle ceiling it broke all of my conveyors and electrical stuff also attached to a rock over a neighboring foundation.
Guess that's what I get for living in a cave.
Not sure if its something to do with the new update, because I never had this issue before.
TLDR: don't put anything important on the rock part of your base if you live in a rock or cave base
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