On the "stable 2.3" version it seems that I'm accumulating a huge amount of alien corpses,
which are useless after researching a single corpse of each species.
I can't find a way to get rid of them, and I think they're filling up my storage.
I'm not 100% certain this is a bug, but it looks suspicious due to the following reason:
I keep the same equipment in each of my bases (up to small variations in ammunition amounts),
but it's evident that the older bases have less storage room left.
I only started investigating this problem when I received a message,
saying my production is halted due to lack of storage space (around 7 months into the game).
Note:
I've found past reports on this problem, but they were all very old (for previous releases) and went unanswered as well.