You don't need to ask them anything, Wicked_Sludge, you just need to point out that you've encountered this problem and that, if the bug is left unfixed by Gigabyte, it would threaten the whole stability of the computer, as it results in the fans turning off and, in reality, the CPU temperature sky-rocketing! The fact that you yourself have side-stepped the standard arrangement now and that it doesn't remain a problem for you is hardly the point.
It's abundantly obvious to me and to many others who've encountered it that there's something really badly wrong with the way that the BIOS interprets the CPU temperature. It looks as though the BIOS can only interpret within a very small range and, particularly when the other BIOS energy-saving settings are used, gets out-of-range and can't recover. This bit of the software has been used across BIOSs in a good number of P55 boards.