1.16 and 1.16.2 assets indexes should be different, because 1.16.2 changed the pack version to 6 so when we load a version of 1.16 that the pack version is still 5 it says that Programmer Art and Default pack incompatible even if it is built in

Affected Versions: 20w06a, 20w07a, 20w08a, 20w09a, 20w10a, 20w11a, 20w12a, 20w13a, 20w13b, 20w14infinite, 20w14a, 20w15a, 20w16a, 20w17a, 20w18a, 20w19a, 20w20a, 20w20b, 20w21a, 20w22a, 1.16-pre1, 1.16-pre2, 1.16-pre3, 1.16-pre4, 1.16-pre5, 1.16-pre6, 1.16-pre7, 1.16-pre8, 1.16-rc1, 1.16, 1.16.1, 20w27a, 20w28a, 20w29a, 20w30a, 1.16.2-pre1, 1.16.2-pre2, 1.16.2-pre3, 1.16_combat-0.

(idk how to put all that in the field up there, it only suggest me 1.16.2)