Alt Tabbing occasionally causes the screen to flicker

[Demonelle]

Hello, I've been playing Deadlock on my laptop since the 15th of September. I've noticed that sometimes when I alt tab -to let's say Discord- my entire screen starts flickering until I either alt tab again to the game or otherwise. I did not see anything like this on the first day (the 15th), but since then, this problem occasionally occurs. It's not an in-game bug but I don't think it's supposed to do that :")

I couldn't see anything written about this (though I might've missed a post or something), so I am reporting this as a bug.

Anyways, any solutions to this problem would be appreciated!
Thanks!