"Oldschool Idle" animation has misaligned parts

[nidbahn]

Reproduction steps
Equip the Oldschool Idle animation and join an experience that supports R15. Look closely at the character’s arms.

Expected behaviour
On idle, the character should look like it consists of 6 rigid parts, more or less like a R6 rig or an unanimated R15 rig.

Actual behaviour
RightLowerArm and LeftLowerArm parts are not correctly aligned with other parts of the character.

Screenshots

This affects all packages, but is less visible - for example, Robloxian 2.0:

Issue Area: Catalog Assets
Issue Type: Rendering
Impact: Low
Frequency: Constantly

[Focia19]

We’ve filled a ticket into our internal database for this issue, and we will update you when we have further information.

Thanks for flagging!