[MC-156746] Can't change Attribute generic.maxHealth for tamed wolves/dogs

After changing a tamed wolf's max health with the command:

/data merge entity @e[type=wolf,limit=1,sort=nearest] {Health:10.0f,Attributes:[{Base:10.0d,Name:generic.maxHealth}]}

stays at 20.0d when checking with data get command and also dies after getting 20 damage, not 10.

Linked issues

migrated 2019-10-03T08:56:37Z

confirmed in the newest snapshot 19w40a

not only generic.maxHealth doesn't work, the same goes for generic.attackDamage

migrated 2021-05-17T01:55:11Z

Still having issues with this in 1.16.5. Did it really get fixed or Mojang just looked away and said they won't fix it?