Ionic 4 Keyboard dismiss shows White background

The app working perfectly and there is no error. But after typing in input box if click on back button to dismiss keyboard, it shows a white color box in the place of keyboard, but keyboard dismiss successfully. I tried to fix the issue by replacing

android:windowSoftInputMode="adjustResize"
to
android:windowSoftInputMode="adjustNothing"
,The error sorted,but keyboard starts to overlap above text input field. Will be good if anyone help me to sort this out. Here by am attaching some screen shots of error.

Keyboard Open(Works Perfectly)

Keyboard dismiss(White block in place of Keyboard)

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