Bug Root motion with additive layers

Version: 2019.4.14 LTS

I've encountered a bug while trying to make a root motion controlled character with walking/running animations on base layer and turning, leaning while turning animations on an additive layer,
it works, but it doesn't rotate the character's root, meaning it runs forward only and just keeps turning in place while running in the same direction
I did another experiment by having the running animation in an additive layer and the default pose in base layer and the character would behave like root motion is disabled, running in place

also worth noting, my character has a dedicated root motion bone that i animate manually, its transforms don't change when it's in an additive layer

could this be a bug that got fixed in later versions? I found a few other threads with a similar problem but with no responses