Artist does not appear in summary list

[arnonm]

I have a number of artists which appear in search, but don't appear in the alphabetical summary on the left. In the screen shot attached, you will see Boaz Shar'abi (with a single quote) and he does not appear on the B section on the left.
It might be connected to another bug I have entered about the same artist in two sub folders

[flacflac]

Screenshot.... where are you?