Build Identifier: https://hg.mozilla.org/releases/mozilla-beta/rev/6f82d30fe05e1412e744cb76af86f0c9ffe509d4 Mozilla/5.0 (Windows NT 10.0; WOW64; rv:47.0) Gecko/20100101 Firefox/47.0 ID:20160502152141 Reproduced on Firefox46 - Aurora48.0a2 without e10s. Not reproduced on Aurora48.0a2 with e10s and Nightly49.0a1 with/without e10s. Reproducible: always Steps To Reproduce: 1. Create New Profile 2. And create a user.js file which is contained the 2 lines. user_pref("app.update.auto", false); user_pref("app.update.enabled", false); 3. Start Firefox 4. Close dialog(default browser) if any 5. Disable e10s from Options and restart 6. Right click on any text and Choose "Inspect Element(Q)" 7. Open Options from Hamburger menu 8. Attempt select "Contents", "Sync" , "Applications" and "Security" ---- observe preferences pane content Actual Results: Preferences pane will not be repainted And Error shown in Browser console: Error initializing preference category paneContent: TypeError: preference.setElementValue is not a function preferences.js:133:0 TypeError: preference.setElementValue is not a function content.js:221:9 Expected Results: It should be normal

Regression windpw: https://hg.mozilla.org/integration/fx-team/pushloghtml?fromchange=dfd6b2cbd7406d464cdb006b239222ca594bff8e&tochange=d933300edeed0c87a9a608a242c3bdbe83734399 Regressed by : d933300edeed Julian Descottes — Bug 1157469 - use EventListenerService to update markupview event bubbles;r=bgrins