--- a/browser/components/urlbar/tests/browser/browser.ini
+++ b/browser/components/urlbar/tests/browser/browser.ini
@@ -1,27 +1,29 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 [DEFAULT]
-prefs=browser.urlbar.quantumbar=false
+prefs=browser.urlbar.quantumbar=true
 support-files =
   dummy_page.html
   head.js
   head-common.js
 
 [browser_bug562649.js]
 support-files = file_bug562649.html
 [browser_bug623155.js]
 support-files =
   redirect_bug623155.sjs
 [browser_bug783614.js]
+skip-if = true # Bug 1521490
 [browser_bug1025195_switchToTabHavingURI_aOpenParams.js]
 [browser_locationBarExternalLoad.js]
+skip-if = true # Bug 1521490
 [browser_moz_action_link.js]
 [browser_page_action_menu_add_search_engine.js]
 support-files =
   page_action_menu_add_search_engine_one.html
   page_action_menu_add_search_engine_many.html
   page_action_menu_add_search_engine_same_names.html
   page_action_menu_add_search_engine_0.xml
   page_action_menu_add_search_engine_1.xml
@@ -45,31 +47,34 @@ support-files =
 run-if = e10s
 [browser_urlbar_searchsettings.js]
 [browser_urlbar_whereToOpen.js]
 [browser_urlbarCopying.js]
 subsuite = clipboard
 support-files =
   authenticate.sjs
 [browser_urlbarEnter.js]
+skip-if = true # Bug 1521490
 [browser_urlbarFocusedCmdK.js]
 [browser_urlbarHashChangeProxyState.js]
 [browser_UrlbarInput_formatValue.js]
 [browser_UrlbarInput_overflow.js]
 [browser_UrlbarInput_tooltip.js]
 [browser_UrlbarInput_trimURLs.js]
 subsuite = clipboard
 [browser_UrlbarInput_unit.js]
 support-files = empty.xul
 [browser_UrlbarLoadRace.js]
+skip-if = true # Bug 1521490
 [browser_urlbarPlaceholder.js]
 support-files =
   searchSuggestionEngine.xml
   searchSuggestionEngine.sjs
 [browser_urlbarRevert.js]
 [browser_urlbarSearchSingleWordNotification.js]
+skip-if = debug # Bug 1521513 - shutdown leaks.
 [browser_URLBarSetURI.js]
-skip-if = (os == "linux" || os == "mac") && debug # bug 970052, bug 970053
+skip-if = debug # Linux & Mac: bug 970052 and bug 970053. Windows: bug 1521532
 [browser_urlbarUpdateForDomainCompletion.js]
 [browser_wyciwyg_urlbarCopying.js]
 subsuite = clipboard
 support-files =
   test_wyciwyg_copying.html