Windows 10: Split screen also splitting audio?

I am having the weirdest problem.
When I use the win 10 function of dragging and dropping two different things to view side by side (in this case youtube on the left side of the screen and a game on the right side of the screen) it also splits the audio, the left side of the screen (youtube) is playing through my headphones, but the right side of the screen (the game) is still playing through my speakers. ...what?
How do I fix this?
(Also how do I replicate it for when I actually WANT this to be happening?)

:)

 

Splitting screens

Hi,

To resolve your issue with splitting screen, we suggest that you follow the
steps provided by Likhitha V.

Let us know how it goes.

 

Split screen

When I go to a split screen view in Windows 10, one of the screens will stop working and/or not respond. For example, if I have a video playing and split screens, the video will stop running but the sound will continue. Another example is that I will
try to use a newly opened screen in split view and the page will not respond. Any suggestions or help?

 

Split Screen

Here's what happened. I ran her computer at my house and couldn't get the screen to split. Then at her house w/ her monitor it split after 5 minutes. I then plugged my monitor in and the screen was still split at her house. I took her monitor and cpu to my house where I couldn't get the screen to split with either monitor. I am perplexed.
Len