bad animation pops from timeline

Hey guys.. I'm not sure what the underlying blend logic of timeline and character animation is but here I'm blending two sets of humanoid animations together with timeline and it pops horribly. You can really see it at the end but its happening on the blend into the clip aswell. Even though they are set to blend in and out there is a pop the moment it starts playing and the moment the clip ends. Can we fix this? Having smooth animation blending is a dealbreaker.

here you can see the clip:


and the blend settings


and yes im using Clip In, but changing this value doesn't affect the pops

the pops:

 

Can you share us the project in a bug report? we see a ghost of a loop in your loop, but might also be a bug, best way would be to have a look at the setup.
can you please post the bug ID here so we can find it faster?

thanks!