Wrong Breaker in Panel
Finally got around to swapping out the other oddball 60amp Cutler Hammer breaker that was installed in a Square D panel for the correct brand/type breaker.
I am guessing this was done by a subcontractor who was too lazy or too cheap to go and get the right circuit breaker at Ace Hardware in town here.
At first glance, I thought it was broken when it was rammed into place, but upon closer inspection, it was clearly cut with a saw or moto tool to get it to fit. NIIIICEEEE.
Got to love that. Oh, and the "home inspector" made no mention of the oddball breakers in the panel.