Awhile ago, I reported that even when you limit bounces to just those with Non-Existent addresses, *all* bounces are sent to the Export file.
Please fix this. This didn't happen when you *first* changed over to the new system. You appear to have broken it since then.
The issue you are currently having is actually a problem our engineering team is working on fixing at this time. We do have a workaround for this issue, just set the page view please set it to 50 per page and you should be able to see the entire bounce report.