After the last update and reboot, the volume control buttons on my keyboard no longer control the volume.
When I press them, an overlay comes up and it animates to indicate the volume is being increased or decreased or muted, but the volume doesn't change.

It looks like this:


This had all previously been working as expected.

To actually change the volume, I have to use "sound preferences" or PulseAudio Volume Control or the control in the panel.