[GraemeJ]

Open a Chordpro file.  Change key, using the transpose menu and hit OK.  Key changes show OK.  Open transpose menu again and hit 'original key' followed by OK - chart still shows the key it was transposed to in the first operation.  The only way to revert to the original key is to step through the menu and then hit OK.

Now, this may be how it is intended to work, but it seems counter-intuitive to me.  Hitting 'original key' should cause it to revert back.