Also if you try to edit playlist from a pinned playlist tab, you get this error:
10.0.14393.0 - 3.1.6164.37229 - System.NullReferenceException: Object reference not set to an instance of an object.
at MusicBee.MusicBeeMain.#=qxFfSxg5eR96FCz6EnYWGoJ7ljy9ZEspP4cYohgGsGmw=(#=qhAnWMhTJ4tM6HpUtcmnNXCLWML8BIIhpDu0ngsOsmQo= #=q7YosK67kamxtkWfG2BO34A==, #=q9RtzrQ$SOLoEUmrd52BArnuViKPlEdSBGhc88NBwU9o= #=qrpfxlnTvv28YjZfF03QP61jKWFMwIfYCUcHFH54Cw_I=)
at MusicBee.MusicBeeMain.#=qILPCaI3ghlSrUDJ$VaeA3HehsvCzNtNfu8JAlg3Pc2M=()
at MusicBee.MusicBeeApplication.#=qVhDJ6pFuJ1Udn1hF6Gpl1A==.#=qS95RSrytbd_CKPisjhHzSA==(ApplicationCommand #=qjsIedVWOHYWDjXgg_FlKIQ==, Object #=qHz_ujOoKQ3vDOJ17qMyx9Q==, IList`1 #=qRDDZi9OjCiIuwqpBb_q6QQ==)
at #=qYyJeK15KJ0ObeZ2i2gLv6xdn727GkEKSIJaO4ayourU=.OnClick(EventArgs #=qCBPoCZcv6U_5hOSYlTmJwg==)
at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ToolStrip.WndProc(Message& m)
at System.Windows.Forms.ToolStripDropDown.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)