I've noticed a temperature issue: I am not sure this affect all items but here it is.
I built a cooking station which is really hot: 528°c
Then I deconstructed it (to move it to a better place), and the copper that dropped on floor (from the deconstruction) was at ~500 °c
Not far from there, I was also building a gaz vent, and a dupe came and took the really hot copper, and made that gaz vent with it.
From now, that gaz vent is really hot (421 c°) and never cool down
Build a cooking station, then deconstruct it while it's at max t°, build a gaz vent that uses the hot copper from the deconstruction