Backed out changeset b33756c2e334 (bug 1645046) for causing several HTML related failures. CLOSED TREE

modules/libpref/init/StaticPrefList.yaml

@@ -1578,7 +1578,7 @@
 # HTML <dialog> element
 - name: dom.dialog_element.enabled
   type: bool
-  value: @IS_NIGHTLY_BUILD@
+  value: false
   mirror: always
 
 # Only propagate the open window click permission if the setTimeout() is equal