KHAAAAAN!
Sorry about your loss, but I sincerely doubt that exploding heat levels next to a black hole are a bug.
On a side note: You made it into an Asp, you don't keep enough cash for insurance in your wallet and then you alt tab next to a black hole? No offense intended - I agree that sounds buggy, but I doubt it's beyond FDs sphere of influence to fix it, because it certainly isn't their game that's buggy in that case.
Damn you Kirk! I did not sleep with your sister I swear! Spock did it!
On a serious note, Black Holes function like planets in this game. Staying near one really is quite harmless. I did HAVE insurance, but placed it into a better scanner to make what was supposed to be a relaxing weekend trip easier to do.
I know that I wont get that refund due to pass experiences, where they only reason why you would get a cr refund is if you where able to pay for the insurance when you lost the ship. This was of course back in beta 1, so the policy may have change, but most likely not.
Could you have perhaps accidentally engaged silent running, if you had stuff running and were in silent running mode while alt-tabbed, you might have self inflicted the heat and then umm.. boom? just a guess
I at first thought this to, but you cannot engage silent running in super cruise.
Additionally, when I was kicked out of SC, I still had shields online. This is what made me conclude it was a bug and not player error.