Hey there @swampy469 , thanks for coming back to us. Just for a bit of background, the BE process is Battleye, which runs alongside the game. Either way, though, we wouldn't expect you to need to reconnect after alt-tabbing out so it's great that you've reported this to us.
For sending us a video, we'd recommend uploading it to the video sharing service of your choice, and sending us a link - you're spot on
Since this isn't an issue that has otherwise...