Okay, this is a long time annoyance - It woudl really be great if one could jump from a bug page back to the list generated by the query. I don't care if you pass the whole damn query as a hidden parameter around and you just re-exec the query when going back. Is this such a big thing ?
Sorry to take so long to get back to this one. I am going through my old bugs and just wanted to close this out saying that this feature has been around for some time now. If you click on the My Bug List link (number range) at the top of the page it will take you back to your previous query.