4.0 regression: cannot go prev in KDE controller

The KDE multimedia controller cannot trigger the playlist previous command. If VLC was started with a single element in the playlist, it cannot trigger the next command either.

This is because VLC fails to emit the org.freedesktop.DBus.Properties.PropertiesChanged signal when a property changes - so the MPRIS clients don't know when a property changes. This really affects any of the VLC property that can change.

This seems to be triggered by the new playlist, presumably because it forbids next/prev at the end/beginning of the playlist (which is arguably a regression of its own).

Edited Dec 23, 2019 by Rémi Denis-Courmont

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