Based on your last post, you should schedule a service appointment with your dealer. Do not wait.
There is visible evidence that there is something caught up in the system. Might be a screw (or something) that fell into the rack...and easily removed. But something is causing the problem. It has repeated. And is consistent. Get it checked out.
I think this because the slide ONLY hangs up coming in. When the slide goes out, the pinion engages on ONE side of the gear teeth on the rack. When it comes in the pinion engages on the other side of the gear teeth on the rack.
