After pressing one of the pre-set filters from the browse project page, the filter results are shown, but the left pane that usually has the filter operations (e.g. Edit, Save, etc.) is missing.
This behaviour is CRUCIAL to the way I do training of JIRA. I show users to use any of the canned filters, and then edit it to suite their needs. For example, if you are looking for all issues you reported with the word "xyz", then run the pre-set filter and then edit the filter to include the query string.
It looks like this is broken only on Firefox. It works as expected on I.E.