If it's the latter there's nothing you can do about it, it's a function of the particular website. I know for instance, when I'm editing a video with WeVideo, and I'm previewing the video, if I click to another tab, the video preview stops playing.
If it's the latter there's nothing you can do about it, it's a function of the particular website. I know for instance, when I'm editing a video with WeVideo, and I'm previewing the video, if I click to another tab, the video preview stops playing.