I can only add another aberration that it just started to happen on my browsers without even updating or doing anything at all: I get the master volume raised, I mean not the YouTube volume, but the volume that is reported in my OS.

I truly don't know how this is possible or how should I turn it off completely. There are some settings in Firefox but the ones I have tried do not work.

This is one of the worst things I have seen in many years, along with all the other aberrations that are already spread on the net.