Wes - I'm glad you remembered to check, as I 100% totally forgot to. And yes, it was the foot that was the issue.
I too, had an issue where I was at a fairly extreme angle, and where I had backed up the hitch head had shifted to one side. I ended up pulling the pin on the foot, dropping the jack, then putting the foot back on. This was on my old manual tongue jack.
The new jack has a round foot and doesn't go up as high as the old one. Just high enough to catch the WD bars.
Regarding the bump - I have felt it. I think it is more easily felt with 1/2 ton trucks and heavier TT combos. I can also feel the hitch head swing from side to side in the case of a slow "S" turn. Part of the route on our regular campground is through the Smoky Mountains, and the road has quite a few low speed turns as well as off throttle coasting. If you aren't on your brakes, you will feel the bump as the HH head pivots to one side or the other. You can trail brake lightly with your controller and it won't happen.