I have also used web viewer in my app but i don’t have faced this kind of issue till now.
My device android version is 11.
My app is updated after Kodular 1.5.2 Fenix Release. That means my app’s api level is 30.
App Link : [BETA] Gamers Spot - Esports & Gaming Community App V3.1.1
Please let me know if you find the same issue in my app.