diff --git a/widget/gtk/nsWindow.cpp b/widget/gtk/nsWindow.cpp
--- a/widget/gtk/nsWindow.cpp
+++ b/widget/gtk/nsWindow.cpp
@@ -1155,6 +1155,28 @@
   }
 }
 
+bool IsPopupWithoutToplevelParent(nsMenuPopupFrame* aMenuPopupFrame) {
+  // Check if the popup is autocomplete (like tags autocomplete
+  // in the bookmark edit popup).
+  nsAtom* popupId = aMenuPopupFrame->GetContent()->GetID();
+  if (popupId && popupId->Equals(NS_LITERAL_STRING("PopupAutoComplete"))) {
+    return true;
+  }
+
+  // Check if the popup is in popupnotificationcontent (like choosing capture
+  // device when starting webrtc session).
+  nsIFrame* parentFrame = aMenuPopupFrame->GetParent();
+  if (!parentFrame) {
+    return false;
+  }
+  parentFrame = parentFrame->GetParent();
+  if (parentFrame && parentFrame->GetContent()->NodeName().EqualsLiteral(
+                         "popupnotificationcontent")) {
+    return true;
+  }
+  return false;
+}
+
 // Wayland keeps strong popup window hierarchy. We need to track active
 // (visible) popup windows and make sure we hide popup on the same level
 // before we open another one on that level. It means that every open
@@ -1211,10 +1233,14 @@
       LOG(("...[%p] GetParentMenuWidget() = %p\n", (void*)this, parentWindow));
 
       // If the popup is a regular menu but GetParentMenuWidget() returns
-      // nullptr which means it's connected non-menu parent
-      // (bookmark toolbar for instance).
+      // nullptr which means is not a submenu of any other menu.
       // In this case use a parent given at nsWindow::Create().
-      if (!parentWindow && !menuPopupFrame->IsContextMenu()) {
+      // But we have to avoid using mToplevelParentWindow in case the popup
+      // is in 'popupnotificationcontent' element or autocomplete popup,
+      //  otherwise the popupnotification would disappear when for
+      // example opening a popup with microphone selection.
+      if (!parentWindow && !menuPopupFrame->IsContextMenu() &&
+          !IsPopupWithoutToplevelParent(menuPopupFrame)) {
         parentWindow =
             get_window_for_gtk_widget(GTK_WIDGET(mToplevelParentWindow));
       }