Lenovo Thinkpad T450s
Ubuntu Linux 17.10
I'm using Chrome 67.0.3396.99
My Question or Issue
Similar to this report I often experience ads with a much louder volume than the song that was just playing. That makes me want to adjust the volume of the ad to avoid destroying my speakers, waking up the neighbours.
However, when I try to do that, the volume control slider immediately turns all gray, the green color and the knob disappear:
The volume slider remains in this state even after the ad has stopped playing and the music has resumed, so I'm unable to adjust the volume.