UMotion doesn't seem to show Reference or Bind pose while Unity Avatar configuration menu does

I'm currently working with this character:

https://sketchfab.com/3d-models/sophia-animated-003-animated-3d-woman-dc448c3be0e74f96a55fb475a13433cf

When I go into Config Mode and select "Apply Bind Pose" , nothing seems to happen. The character stays in the pose of the first frame of the included idling animation. I would expect she would go into a T-Pose when going into Config Mode and when pressing the "Apply Bind Pose" button. Should this happen?

When I inspect the character fbx myself and go into avatar configuration, I can see T-pose when pressing Pose-> Sample Bind-Pose or Enforce T-Pose. When I press Pose->Reset, I see the idling pose again.

Pose-> Reset result:

Pose-> Sample Bind Pose result:

Pose -> Enforce T-pose result:

I'm mainly concerned that the reference pose (for animating) is a T-Pose and not the idling pose.