Unity - warning: animations neck and head have scale

I always get this warning if I import my model to unity:

Clip 'soldier_idle' has import animation warnings that might lower retargeting quality:

Note: Activate translation DOF on avatar to improve retargeting quality:

'neck' has scale animation that will be discared.

'head' has scale animation that will be discared.


Even though there are in fact no scale animations on the bones neck and head as you can see in my blender dopesheet.

So why is this warning showing?

• I have the same issue in 2019. Did you manage to find the cause? – mt.andi Sep 8 '19 at 7:32
• I had to quit the project because I had no time. – Black Sep 9 '19 at 6:40