Snaps that open by themselves

Hello, so here is my problem
For the past couple of days, I’ve been receiving my streaks and chatting on Snap (photo) with people. And the problem is that when I press the notification (that I receive when someone sends me a photo snap), I end up on all my Snap conversations (so far, everything is normal), but this is where the problem appears: my snaps are already open!!!
So I would like to know if this happens to other people or if you have any solutions?
Maybe a hacking? What do you think?