More unexpected results

I ran into problems with this rig before, so I made a number of changes. I’m still having problems and I’ve run out of ideas. Using Blender 2.83.1 on Fedora 32
The figure is supposed to look like this:

Instead, when I render the sequence it looks like this:

First thing to do is to make sure that either nothing is keyframed anywhere anytime, or that you keyframed any changes you made to the bones.

New file. Nothing else set up in it.