Odd behaviour with chordnames

r2451.

I am having some odd results in the attached file.

The piece was originally in 12/8.
I changed that to 3/2. All seemed to work for the last day or so.

I added the MM.

I placed some chordnames.
The initial bar should show a Fm.
However, that change will not copy, and indeed disappears once saved and re-loaded.
Also. I have just had a crash while trying to copy the placed Fm (in the sames session).

Any direction?
Thanks.