UPDATE:
Thanks to UnderTheBridgeGames I was able to fix this issue. When exporting the model, change the Forward property’s value from -Z to Positive Z and it will work!
In my case the issue was that in “Import 3D” under “Animation General” I needed to have “Rest Pose Animation” as “Default”, instead of “Default with rotations zeroed out”.
Try manually exporting the animations from blender as .fbx one by one, and make sure to play around with the Forward property before exporting. This has been the solution that I’ve been using lately.