FF92: Probleme in Folder-PopUps

/*     PopUps gerundet
    von FuchsFan hier in Zeilen 59-76 gemopst:
    https://www.camp-firefox.de/forum/thema/112673-userchrome-js-scripte-f%C3%BCr-den-fuchs-diskussion/?postID=1139379#post1139379
*/
/*    milupo:    "Bei border kannst du statt solid auch groove, ridge, inset oder outset verwenden." */

/*     200224: alles auskommentiert, was ich momentan nich mag/will */
/*    210616:    FF89neu*/
/*     210811:    Anpassung -moz-appearance: none!important; */
/*     210817:    optische Anpassungen*/
/*  210907: FF92: Probleme mit Ordnern                 */
    

/* Einstellungen für alle Popup-Fenster */
.popup-internal-box, menupopup, popup {
/*    -moz-appearance: none !important; */             /*FF91 veraltet*/
    appearance: none !important;
    border: 5px red solid !important;
    border-radius: 10px !important;
    /* background-color: white !important; */         /* erste Hintergrundfarbe - ganzes Fenster */   /* padding: 3px  !important; */    /* 210817: Umrandung nach außen versetzt sieht bääh aus*/
    /* width: 325px !important; */                     /* Vorgegebene Breite der Popup-Fenster */  
    /* font-family:  "helvetica"  !important; */
    /* font-style:   italic !important; */             /* Schriftstil */
    /* font-size: 11pt !important; */                 /* Schriftgröße */
    /* font-weight: bold !important; */             /* fette Schrift */
    /* box-shadow: 10px red inset !important; */                 
}

/*     Hintergrundfarbe/Separatoren für alle Popup-Fenster ändern
    210810:    grisu + andy: https://www.camp-firefox.de/forum/thema/133146
*/

.menupopup-arrowscrollbox {
    background-color: blanchedalmond !important; 
    }

menuseparator {
    margin-top:  2px !important;        /*Abstand nach oben*/
    margin-left: 2px !important;        /*Abstand von links*/
    margin-right: 2px !important;        /*Abstand von rechts*/
    min-height: 3px !important;
    max-height: 3px !important;
    background: black !important;
}

//     Autopopup_bookmarks.uc.js
//  von @aborix, zuletzt von hier:
//    https://www.camp-firefox.de/forum/thema/131728
//
//    210615: FF89

(function() {

  if (!window.gBrowser)
    return;

  let itemToClose = null;
  let timeoutEnter, timeoutLeave;
  let placesContext = document.getElementById('placesContext');

  placesContext.addEventListener('popuphidden', function() {
    if (itemToClose) {
      itemToClose.open = false;
      itemToClose = null;
    };
  });

  function onMouseenter(event) {
    clearTimeout(timeoutLeave);
    timeoutEnter = setTimeout(function() {
      itemToClose = null;
      if (placesContext._view && !placesContext._view._openedMenuButton) {
        placesContext.hidePopup();
      };
      event.target.open = true;
    }, 100);
  };

  function onMouseleave(event) {
    clearTimeout(timeoutEnter);
    timeoutLeave = setTimeout(function() {
      if (placesContext.state == 'closed') {
        event.target.open = false;
        itemToClose = null;
      } else {
        itemToClose = event.target;
      };
    }, 100);
  };

  function addListeners(items) {
    for (let item of items) {
      item.addEventListener('mouseenter', onMouseenter);
      item.addEventListener('mouseleave', onMouseleave);
    };
  };

  let observer = new MutationObserver(mutations => {
    for (let mutation of mutations) {
      let items = [];
      for (let node of mutation.addedNodes) {
        if (node.type == 'menu') {
          items.push(node);
        };
      };
      addListeners(items);
    };
  });

  addListeners(document.querySelectorAll('#PlacesToolbarItems > toolbarbutton[type="menu"]'));

  observer.observe(document.getElementById('PlacesToolbarItems'), {childList: true});
  setTimeout(() => observer.disconnect(), 5000);

  window.addEventListener('aftercustomization', () =>
    setTimeout(() =>
      addListeners(document.querySelectorAll('#PlacesToolbarItems > toolbarbutton[type="menu"]')),
      100
    )
  );

})();