Your scene is very different from my bugs.

Don't know if really GL_EXT_packed_depth_stencil is really necessary here.

On my system looks like this:

https://ibb.co/T2ZWWZF

As seen, Manny as his shadow (the player) is rendered in front of wheels and stuff in the garage due to failure of depth testing. Same happen in other scenes.

The large stretch of the shadow is due to "no" stencil working.