The order in which Additive Anim Type is set to Mesh Space and Force Root Lock is enabled/disabled changes the end result. This seems to be related to the animation compression and DDC.
Open an animation sequence.
Enable Force Root Lock
Set the Additive Anim Type to Mesh Space
(If the compression scheme was Remove Linear Keys with re-targeting enabled the animation could disappear here)
Disable Force Root Lock
Observe how the animation has disappeared (leaving cloth if any).
Change the sequence back to how it was when opened.
Set the Additive Anim Type to Mesh Space
Enable Force Root Lock
Disable Force Root Lock
Observe that the animation did not disappear.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-79044 in the post.
| 3 |
| Component | OLD - Anim |
|---|---|
| Affects Versions | 4.22 |
| Target Fix | 4.26 |
| Created | Aug 16, 2019 |
|---|---|
| Resolved | Aug 11, 2020 |
| Updated | Aug 28, 2020 |