maybe introduced by https://bugzilla.mozilla.org/attachment.cgi?id=305729
before that patch popups with parent were set as vmclass "Toplevel". now everything is "Popup" with proper hints.
maybe introduced by https:/ /bugzilla. mozilla. org/attachment. cgi?id= 305729
before that patch popups with parent were set as vmclass "Toplevel". now everything is "Popup" with proper hints.