The fade time does not seem to work with Icecast/ICESCC , if the user changes the value it does nothing, if the admin changes via raw config it does work

I also think that when the stream is restarted (or some action) seems to  cause the 3 fade options  to go back to default

<Crossfade>0</Crossfade>
<!-- Minimum track length to crossfade; minimum 10 sec -->
<MinCrossfade>10</MinCrossfade>
<!-- If this is set to 1, tracks will be crossmixed (full volume) instead of faded -->
<CrossMix>0</CrossMix>

I can see this happening also.

When ever users update anything in their settings, all fade settings in the icescc xml are reset to default ones.