collaboration error

[gurnemanz]

Thanks for update which I have just installed. However the above bug which you said you would fix "in the next update" seems to be still present in exactly the same way.

Just reviving this collaboration bug. I wanted see what recordings I had of Janet Baker singing Mahler. I set up browse by Artist+Composer with the result that Mahler does not appear. I knew I had one - which the right pane reveals (screenshot). She does figure as artist on a Mahler recording, but because she comes second as a collaborator, the bug means that she is not picked up.