Glitching food/tiles

Somewhere between cycles 5 and 6 something went wrong. After having multiple "not enough food" alerts by cycle 12, I noticed that there were 13.000+ kcal of muckroot on the floor but the overall kcal were 6.600.

I saved and reloaded the game to solve the problem, because the muckroot was unsweepable for some reason(I deconstructed the whole original ration box because noone was moving its storage to the new ration box area). After loading the save file of cycle 12, the muckroot could be swept but I notice 2 tiles that wasn't there before(bristle blossoms of image above were burried after loading as shown below).

Searching back autosave files, it seems that something happened between cycles 5 and 6 to glitch the game.

-print screen before and after reloading save file "rich spacepad 12"

-save files of original world gen, cycles 5,6 and cycle 12 as saved, 12 2 after digging the burried blossoms and saving again to see if error could be reproduced (but no)

Rich spacepad 12 2.sav

Rich spacepad 12.sav

Rich Spacepad Cycle 5.sav

Rich Spacepad Cycle 6.sav

Rich Spacepad.sav