BETA: Search in Sonos Controller does not work

[isotopp]

Using the Sonos Controller for Mac, I tried searching for the artist ACDC in the "Subsonic SONOS" folder, but it does not find anything. Neither does searching for AC/DC.

I can browse the ACDC folder in Sonos, and play music from it. The mp3 files are tagged with artist: AC/DC.

Using Subsonic native search on isotopp.sunsonic.org, both ACDC and AC/DC find stuff.

http://imgur.com/a/QXq4m

Subsonic 5.2 Beta 1 using Oracle JRE, Java(TM) SE Runtime Environment (build 1.8.0_31-b13)
Sonos Controller for Mac, Version 5.3, Build 28186031 on MacOS 10.10.2
Sonos Version: 5.2 (build 28183040) on the PLAY systems (2x Play:3, 1x Play:5 and a Bridge)