FF89: Lesezeichenordner ohne klicken öffnen - komisches Verhalten

// Folder beim drüberfahren aufklappen...
// aborix zuletzt von hier:
// https://www.camp-firefox.de/forum/thema/129425-lesezeichenordner-ohne-klicken-%C3%B6ffnen/?postID=1132259#post1132259

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