Presentation of multi-artist data in All Artists view

[ac16161]

I have dBpoweramp configured so that when I right-click on a track in Windows Explorer, I have the "Edit ID-Tag" option so I can see all the raw tag data. That's how I verified I had some M4A/ALAC files with Artist tag set to "Artist 1; Artist 2" but in the All Artists view on my control point they were showing as "Artist 1/Artist 2". As mentioned above, converting those to FLAC stopped the behaviour. I have some iTunes purchased tracks (M4A/AAC) that also mis-behave, I can confirm they have Artist tag in "Artist 1; Artist 2" format but the All Artists view shows "Artist 1/Artist 2". I'd prefer not to convert these to FLAC, but curious to understand the root cause.