I tried to get it to reproduce last night with a 30Q, VTC6, 25R, M35A, and a Sanyo NCR18650, and was unsuccessful. I did notice after further inspection one of the six positive pins were bent. I think because one of the NCR18650 flat tops had the positive terminal bent from dropping a Hank light and I used that battery in a few of my Zebralights, because I don't use button tops or protected cells in these lights (I have around 100 flashlights so I know better, mistakes have been made in the past. :p). I did check my SC64w and it too had a bent positive-side pin bent and I never had an issue with that light, and I would think the remaining 5 pins on the SC65c would do the job just fine, as they have in my SC64w, but who knows.
I never play with the temp settings or modes in my Zebralights because I don't find the default modes annoying and I have around 7 Zebralights. So I certainly didn't reset the default modes or alter them. I am going to keep trying for another day to repeat it and then I will change my settings back to default and try some more. :)
Also not going to try and return it because of the physical damage on the pins I found.