1 files changed, 18 insertions, 0 deletions
diff --git a/browser/base/content/test/general/browser_bug380960.js b/browser/base/content/test/general/browser_bug380960.js
new file mode 100644
index 0000000000..5571d8f08e
--- /dev/null
+++ b/browser/base/content/test/general/browser_bug380960.js
@@ -0,0 +1,18 @@
+function test() {
+  var tab = BrowserTestUtils.addTab(gBrowser, "about:blank", {
+    skipAnimation: true,
+  });
+  gBrowser.removeTab(tab);
+  is(tab.parentNode, null, "tab removed immediately");
+
+  tab = BrowserTestUtils.addTab(gBrowser, "about:blank", {
+    skipAnimation: true,
+  });
+  gBrowser.removeTab(tab, { animate: true });
+  gBrowser.removeTab(tab);
+  is(
+    tab.parentNode,
+    null,
+    "tab removed immediately when calling removeTab again after the animation was kicked off"
+  );
+}