Sketamari's death count seems to reset to 0 (and thus I lose the Bestiary entry) every time I close the game. Also seems to invalidate death counts to other skeletons in the run too.
#Sketamari Bestiary
woeful apex
smoky orbit
have had the same problem for a long time.
lost my director bestiary record multiple times, and now all the monsters i killed in my DLC run got wiped, its very irritating.
from what i heard, the solution is to start and then stop a few more runs. director i defeated twice in a row and then started and ended a 3rd unrelated run, then it finally stuck.