【fix】【BOTA】书签列表整体偏下

PDF Office/PDF Master/Class/PDFWindowController/Side/LeftSide/KMLeftSideViewController.swift

@@ -386,6 +386,7 @@ class KMLeftSideViewController: KMSideViewController {
                 KMMainThreadExecute {
 //                DispatchQueue.main.async {
                     self.toolButtonBox.isHidden = true
+                    self.toolButtonBox.contentView = nil
                     self.toolButtonBoxLayoutConstraint.constant = 0
                     self.displayBookmarkController()
                 }