Wreckage despawns while Salvaging.
Happended several times with own wrecked ships as well as randomly spawned wreckage.
As soon as one interacts with the wreckage (salvaging, shooting,flying into), it seems like a timer is activated that automatically despawns wreckage after a cerain amount of time.
Very annoying when salvaging larger wreckage, as it may despawn just when you get to the valueable parts.
In case this behavior is intended, i´d suggest resetting that timer every time the player interacts with wreckage, as well as only despawning wreckage smaller than 10 blocks/volume x.
Logfile of the last time this happed is attached.
MfG
clientlog_Tue_Mar_14_11-15-48_2017.txt