Video (VOD) not resuming after ads play if not the active window

I've got a Video (VOD) running as a background tab / not the active window, and every time after the Ads have finished playing the Video will pause until I go and make the window/tab active.

I only have the one screen, and I like to listen to streamers talk more than I watch, so I'll often have live streams or VODs in a background window/tab. Live streams are fine, but VODs have a serious bug where the video does not resume after ads.

For me, this is as annoying as heck and inconvenient enough that I'm contemplating searching for another way of watching/listening to Twitch VODs.

This is happening in Firefox and a (never touched) Microsoft Edge.