One answer is that this is all a speculative bubble, so all oil-related products go up as soon as there is reason for one of them to go up.

My theory is that the market is so tight that any refining capacity which is lost effectively means that the oil that would have been processed by that capacity is lost as well, which means more shortages dow nthe road. The markets don't react to the temporary drop in demand for oil, but to the expected future extra demand that this will mean as the missing volumes of gasoline keep putting pressure on the demand side  later, in addition to the demand then.

Maybe HiD, who knows the downstream world better than I, has a better answer.

In the long run, we're all dead. John Maynard Keynes