(has been briefly mentioned in the latest devstream, but I can't see the report here, so for the sake or redundancy..)
When large lumps of resources accumulate on a single tile with the size around 100k, on world reload their size gets reset to some 1-5k. It doesn't seem to be related to integer overflow, though, as, for example, 105k and 110k lumps are both "rounded down" to 1k. This is noticeable during normal play if you're using the "quantum stockpile" technique by constantly emptying the compactors, which generates progressively larger lumps of ores under them.
This is on AU-220294
- In debug mode, paint a couple of tiles of resources, i.e, a couple of Clay tiles with a 300K temp and different masses (i.e. 210k and 220k); - Order a dupe to mine the tiles. You'll get lumps of 105k and 110k coal lying on the ground. - Save the world and immediately reload. Watch the lumps become much smaller.