Spine / Dragonbones mirrored object not fully mirrored?

However, I am seeing something weird: After importing the json into Visionaire, my left walk animation in Visionaire looks perfectly fine... But when I set the right walk animation to simply mirror the left, there is a problem: the bulk of the graphics are mirrored, except for the feet of the object, they are still pointing the original direction.

Left:

Any thoughts? 

Since the object looks and behaves as expected when facing left, would this be a bug in Visionaire?

Within dragon bonoes itself I can mirror it by doing the -1 scale at the root node.

Either way, even if an individual part would be flipped in the definitions for some reason, I'd expect it to be consistent, e.g. rendered backwards when showing it in the original direction as well.

Another weird thing I noticed is that in the visionaire editor the character shows up and works (aside from the backwards feet), but when I export the game and run the executable directly it doesn't show up at all.

...Just exporting to sprite sheets seems work more predictable than converting them to spine format for me at the moment, so I guess I'll just go that direction for now, which lets me use both Spriter Pro and DragonBones.

Filesizes seem reasonable after converting to webp format.