Workflow:
1) Click on album.
2) Select multiple songs from album.
3) RMB > Auto-Tag by Album.
4) Selected album / saved and closed window.
5) 2/3 songs were highlighted so I clicked in the blank space in the album drop-down to clear the selection.
6) Error appeared.
Error Dump:
MusicBee v3.3.6862.33535 (Win10.0), 15 Oct 2018 16:17:
System.IndexOutOfRangeException: Index was outside the bounds of the array.
at #=zLdDYCcOTsI065k2cc$85wYz75DHh.#=z2rJA_yEmiM8IcOFP5A==.#=zD$zDjdT8Tpm9N16azYr9ooc=.#=zh8MYqkMQSYvwTWDxDQ==.#=zbAw2uSj4nBjc()
at #=zLdDYCcOTsI065k2cc$85wYz75DHh.#=z2rJA_yEmiM8IcOFP5A==.#=zD$zDjdT8Tpm9N16azYr9ooc=.#=zbAw2uSj4nBjc()
at #=zLdDYCcOTsI065k2cc$85wYz75DHh.#=z2rJA_yEmiM8IcOFP5A==.#=zD$zDjdT8Tpm9N16azYr9ooc=.#=zuIrPc3oEUYuA(MouseEventArgs #=zrkdvQtc=)
at #=zDZX1nNiZsmvY9kvkKE12iok=.OnMouseMove(MouseEventArgs #=zrkdvQtc=)
at #=zLdDYCcOTsI065k2cc$85wYz75DHh.#=z2rJA_yEmiM8IcOFP5A==.#=zD$zDjdT8Tpm9N16azYr9ooc=.OnMouseMove(MouseEventArgs #=zrkdvQtc=)
at System.Windows.Forms.Control.WmMouseMove(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at #=zl9CX0ahTGdhDx1x_zHnvDHo=.WndProc(Message& #=ztZ1rCKY=)
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)