When I have Spotify running or a Youtube video playing on a different tab, Google Chrome automatically decreases the volume to a very low level. There is no change in the volume mixer, but it is a very distinct change. 

This happens when I `alt-tab`, `ctrl-tab` or leave the page or tab that has a running sound. There was no problem like this in the past and I can't find any solutions regarding this issue. It would be nice if there was a way to fix this because it is very annoying to not be able to switch tabs without the volume going down.