Here are some drops that changed in week 43b, and should be reviewed.
Horses no longer drop anything. Previously horses could drop leather, and skeletal horses could also drop bones and rotten flesh. It is not clear how the DeathLootTable schema could differentiate these since they are the same entity type. (addressed in 43c)
Witch potions are apparently 'equipment', and therefore not expressed in the loot tables. (Did not test if they still actually drop) (does not seem to be any bug here)
Music discs dropping from creepers killed by skeletons are not yet expressed in the loot tables. (Did not test if they still actually drop)
Mob heads dropped by electrified creepers killing certain mobs are not expressed in the loot tables. (Did not test if they still actually drop)
Baby animals have not been discussed. Previously, baby animals did not drop loot. Presumably this has not changed, so presumably baby animals are hard-coded to never drop anything, but begs the question of whether babies should have loot tables or adults should have an is_adult condition or something.
Does enderdragon get a loot table? (covered by another bug)
Does wither get a loot table?
Just want to ensure nothing gets 'left behind' as this feature is implemented.
Linked issues
Comments 7
Some have been addressed. These are not addressed and are not in the linked tickets:
Music discs dropping from creepers killed by skeletons are not yet expressed in the loot tables. (Did not test if they still actually drop)
Mob heads dropped by electrified creepers killing certain mobs are not expressed in the loot tables. (Did not test if they still actually drop)
Baby animals have not been discussed. Previously, baby animals did not drop loot. Presumably this has not changed, so presumably baby animals are hard-coded to never drop anything, but begs the question of whether babies should have loot tables or adults should have an is_adult condition or something.
Does wither get a loot table?
Please structure your report a little bit better and removed all strike through parts. Also please mention the "covered by another bug" so it can get the link "Relates to ...". (Found it, it is MC-91196)
And please change the title to something like "Uncovered loot drops" (or something similar)
The wool of a sheep is not covered, probably relates to MC-91148
I tested music disc and mob heads in 15w44a, they work.
I think it's safe to assume that baby animals, wither, and enderdragon just don't get tables, that's fine.
I think this can be resolved as 'working as intended' at this point.
Are any of the things you listed still not fixed in 15w43c and haven't been reported in another open ticket yet?