Found a bit of a weird bug, don't ask me why I did what I did to find this. STR: 0. It doesn't matter if HWA is enabled or not, you'll see the same result. 1. Open about:preferences and wait for it to finish loading. 2. Repeatedly refresh the page by double-tapping, spamming or holding any of the keyboard shortcuts to refresh the page (e.g. f5, ctrl+r). Expected: Why are you spamming refresh!?!!? Such silly! I can't think of any reasons to refresh the settings tab, but atleast it shouldn't break. :| Actual: The page-content isn't rendered, but the page-tabs (i.e. General, Content, Applications etc.) remain (see screenshot). Error: 'ReferenceError: gSubDialog is not defined preferences.js:25:2' is thrown. Clicking any of the page-tabs will do nothing, nor is anything thrown. Workaround: A simple refresh of the page restores the page. Ahaa! a reason! :D

This is still happening but the actual result is slightly different: You will now see a broken version of the search tab after completing the STR. See attached screenshot. Errors: * ReferenceError: gSubDialog is not defined preferences.js:87:2 * TypeError: dialogClose is null subdialogs.js:25:4