Just a minor error imo. Can easily get around it, but I think might as well report.
The error happens when adding current track from the Upcoming Tracks panel on the top right using right click -> 'Queue Next'. So far only the currently playing track produces the error. When done on upcoming tracks also works funny sometime but unlike this one, no error box come out.
The error didn't come out when using ctrl+shift+enter. In fact, nothing happen?
Here's the error message.
MusicBee v3.3.7165.34284 (Win10.0), 19 9 2019 10:26:
System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
at #=zf3ZwJ6xmEulxysJc6gfsZpqBGynfK$$enw==.#=zImt9MNP_BTgooc7O$hmcYOk=(Int32[] #=zdiRGKOumtMWW, Int32 #=zxefn2TI=)
at #=zf3ZwJ6xmEulxysJc6gfsZpqBGynfK$$enw==.#=z7B9QlIIqZsKr3_XQEbEBJVSJCe95(Int32[] #=zTOTByb0=)
at #=zKOrIwUq7OoqGYxpwkEl76uo=.#=z$xjxteEbKOoeViNrURbHPR580K5n(Int32[] #=zTOTByb0=)
at #=z0E9gkQzHCOugQ_NHtBifIfXHk5Lp.#=z8HTLpNI=.#=zDFjrVug=(ApplicationCommand #=zSkKgojw=, Object #=zQtcNpj4=, IList`1 #=znVb4SOQ=)
at #=zgpcY4XMXCktEo$xib1Yg2bo=.OnClick(EventArgs #=z2hFhQMw=)
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)
Here's screen shot