Snapchat: blur background with front camera

Hello,

Recently, when I open the Snapchat app and activate the front camera, the background appears blurry like in portrait mode.
I've already turned my phone off and on again and also uninstalled and reinstalled the app, but nothing works; the problem remains the same.
It has become very complicated to take selfies with Snapchat because when there are two people, the app only recognizes one of them and the rest is completely blurry...
If anyone has had this problem with their iPhone 11 and found a solution, I would be immensely grateful ??????????