Bug: Exported FBX animation flickers in Maya

[JulianKnodt]

Describe the bug
Animations exported to FBX flicker when reimported back into Maya. The exact same file does not cause any flickering when imported into Blender. Not entirely sure what the cause of the bug is, but I suspect that it may be because there's some setting that is not being set, and Blender just ignores it and sets a good default. When the file is exported from Blender and imported into Maya, the file then looks correct.

To Reproduce
I can't submit the mesh, but it's just import and export with the given mesh.

Expected behavior
The animation should be identical to the input, without said flickering

Screenshots

Platform (please complete the following information):
Maya 2024

Additional context
I also manually checked if there were NaNs in the FBX export due to decomposing the rotation, but I didn't see any. It also could be that Blender is doing some manual cleanup or, populates the bind pose differently.

I get a warning when importing into Maya that the bind pose is not set so it automatically generates one, but I found that the automatically generated bind pose looks correct.

When importing the FBX exported from Maya into Blender, the animation also looks correct.

[JulianKnodt]

Found the cause, seems like when converting a matrix to euler angles, it will sometimes wrap and produce incorrect values. Seems like Blender automatically will do shortest path conversion.

https://eecs.qmul.ac.uk/~gslabaugh/publications/euler.pdf

[JulianKnodt]

The fix is to compute the nearest angle just by adding 360 degrees

I may add a fix sometime soon.