Puppet behaves strangely on export

Hi

I'm a complete beginner and I'm working on my first project (steep learning curve!)

In the attached snippet the puppet moves to the left of the screen and I've used the left arrow to get the 'walk' action.

Everywhere else this has worked, but this time the puppet stoops badly and has a distorted face during the movement.

I've deleted, replaced, copied, pasted and re-exported multiple times but can't fix it.

Any advice would be much appreciated.

Thank you!