I don't understand, either. It's like the camera somehow got stuck in some odd loop where it could only write to a portion of the card, and only a couple of files at a time or something odd.
I will be checking to see what sort of data the card currently holds, and will re-format again to be sure that nothing odd from external access is creating issues.
FWIW, my question of what the "you've got fake media" comment stemmed from was sincere. My history with this card is that it works fine. I have an issue that is clearly "one-off", and the comment immediately comes out that it's fake without citing anything that led to that conclusion. But, now that you've responded with even more condescension instead of helping me understand, I'll stop trying to learn and just accept everything I'm told.