Always disable dragging of the tab bar (to drag the window itself) if it is not on top #1134

content/treestyletab/treestyletab.css

@@ -422,9 +422,10 @@ toolbar.treestyletab-tabbar-toolbar-ready:not([nowindowdrag="true"]),
 .treestyletab-tabbar-toolbar:not([treestyletab-tabbar-position="top"]),
 .treestyletab-tabbar-toolbar[treestyletab-tabbar-position="top"]:not([treestyletab-tabbar-fixed="true"]) {
 	appearance: none !important;
-	-moz-appearance: none !important;
+	-moz-appearance: none !important
 	line-height: 0 !important; /* to avoid an useless space above the tab bar */
 	position: fixed !important;
+	-moz-window-dragging: default !important;
 }
 .treestyletab-tabbar-toolbar:not([treestyletab-tabbar-position="top"])
   .tabbrowser-tabs,

history.en.md

@@ -1,6 +1,7 @@
 # History
 
  - master/HEAD
+   * Scrollbar in the tab bar couldn't operated by mouse if you show the menu bar, at Firefox 47 on Windows.
    * Better compatibility with the "Dark" theme of Firefox Developer Edition.
    * Better compatibility with FireGestures.
    * The width of expanded tab bar isn't enlarged too much, when shrunken tab bar is going to be wider than expanded tab bar.

history.ja.md

@@ -1,6 +1,7 @@
 # 更新履歴
 
  - master/HEAD
+   * Firefox 47で、Windowsにおいてメニューバーを表示するとタブバー内のスクロールバーをマウスで操作できなくなる問題を修正
    * Firefox Developer EditionのDarkテーマとの互換性を向上
    * FireGesturesとの互換性を向上
    * 縮められたタブバーの幅を変更するときに、展開されたタブバーの幅が異常に大きくなることがあったのを修正