Harmony version 20.0.0 (16529), I’ve found a bug involving Free Form deformers.
The “Reset Current Keyframe” button will properly reset the position of a deformer, but won’t reset the rotation. The only way to get it back to default is via copying the value from a prior keyframe, or editing it in the function view (after expanding the variables in the layer view).
This has been a bug for some time, I believe since FF Deformers were implemented.
Specs (if relevant)
OS: Windows 10 64 bit
RAM: 32 gb
GPU: Nvidia GTX 1070
CPU: i7 7700k
(Not sure if this is the best spot to submit bugs reports, if there’s a better spot for me to contact I’ll do so.)