[BUG] Animation gets all messy when importing from Blender to Unity

Hey guys!

I have a little issue when importing a model with animations from Blender to Unity. My running animation gets all weird when I run it in Unity, while it is looking perfect inside Blender.

Animation in Blender:
https://i.gyazo.com/46c10cdeb186d17012f8878ccf567379.gif

Animation in Unity
https://i.gyazo.com/c8065d7e7acea42bd3f84bc3830aaba0.gif
(Note: I slowed down the play speed so we can see it clearly)

As you can see, the legs get a bit messy and there is a strange stretching happening on the hands...

Any help is welcome !

 

I think I saw this once, when I forgot to apply all scaling and transforms to objects in blender.. You never know, could be something completely different. (Ctrl+a, apply rotation and scale)

 

That's the first thing I thought I did wrong too, but no appearently my scales and rotations are good so the problem might be coming from my weights or keyframes... Guess I'll have to redo my whole running animation

 

You've not got any warnings in Unity's console about unassigned vertices have you? That can prevent animations working as desired too. You've probably already looked for that.

 

I was having a similar problem, the hint of @DavidGeoffroy made me realize I had scaling on the root object. Applying those scaling in blender solved the issue.