Chrome will send a pause event to the actively playing video/audio element when the user changes to another tab (and resume it similarly when they return to the tab). It might be worth considering adding this feature (perhaps even as an option), since users are reporting this as a web compatilbiity/interop issue.
perhaps even as an option
If this isn't made optional (and perhaps also non-default), then I am certain that there will be complaints in the other direction, too, as listening to audio (or the audio track of a video) from a background tab is a popular use case too.
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If this isn't made optional (and perhaps also non-default), then I am certain that there will be complaints in the other direction, too, as listening to audio (or the audio track of a video) from a background tab is a popular use case too.