Keyboard space blank after close

After my keyboard closes on IOS its leaving white space over my content. Anyone know how to solve this problem?

Cordova app? There is an issue with it. If you created app with Framework7 CLI, this problem is fixed there

could you please explain more about the fix? we are using a custom web wrapper. not cordova it happens on ios only. any info you can give me about what causes the issue so i might be able to fix our build?