I can't reproduce this in any browser that I can test (IE6, Firefoxes, Opera, all on Linux). The view bug pages should never be cached by any browser anyways because of the headers we send for them, which is "Cache-Control: no-store, no-cache, must-revalidate" and an expiration matching the access time, and I've never seen a browser misbehave on these types of pages.

However, while I can't speak much for the demo because I don't know how it's set up, I will remind you that you should not set the $g_allow_browser_cache configuration variable.

With $g_allow_browser_cache=ON there was this expiration date, which was seemingly ignored by IE6,
without $g_allow_browser_cache the issue is fixed.

Thus, sorry again, a configuration problem. The only strange thing is that this has not been reported before v1.1.4.