diff --git a/browser/components/customizableui/test/browser.ini b/browser/components/customizableui/test/browser.ini
index 40dd2ec8bfca..c7f4bb296429 100644
--- a/browser/components/customizableui/test/browser.ini
+++ b/browser/components/customizableui/test/browser.ini
@@ -88,7 +88,6 @@ skip-if = os == "linux" # Intermittent failures
skip-if = verify
[browser_956602_remove_special_widget.js]
[browser_962069_drag_to_overflow_chevron.js]
-skip-if = verify || os == "linux" || os == "mac" && debug # bug 1515204
[browser_963639_customizing_attribute_non_customizable_toolbar.js]
[browser_967000_button_charEncoding.js]
[browser_968565_insert_before_hidden_items.js]
diff --git a/layout/base/tests/bug1496118-ref.html b/layout/base/tests/bug1496118-ref.html
index 8e23142f144b..af5026f9854f 100644
--- a/layout/base/tests/bug1496118-ref.html
+++ b/layout/base/tests/bug1496118-ref.html
@@ -8,7 +8,7 @@
-
+
@@ -16,6 +16,7 @@
SimpleTest.waitForFocus(() => {
let input1 = document.getElementById('input1');
input1.focus();
+ input1.selectionStart = input1.selectionEnd = 0;
synthesizeKey("A");
document.documentElement.removeAttribute("class");
});
diff --git a/testing/mochitest/tests/SimpleTest/EventUtils.js b/testing/mochitest/tests/SimpleTest/EventUtils.js
index 968a7dfabd38..67ea84db757a 100644
--- a/testing/mochitest/tests/SimpleTest/EventUtils.js
+++ b/testing/mochitest/tests/SimpleTest/EventUtils.js
@@ -2337,6 +2337,7 @@ function synthesizeDropAfterDragOver(aResult, aDataTransfer, aDestElement, aDest
aDataTransfer, aDragEvent);
sendDragEvent(event, aDestElement, aDestWindow);
}
+ synthesizeMouse(aDestElement, 2, 2, { type: "mouseup" }, aDestWindow);
return effect;
}