On iPhone devices screen is zoomed in and fails to resize back after user enters input

I have ionic cordova hybrid mobile app where for iPhone devices when keyboard is launched to enter input, iPhone screen is zoomed in and after entering the input, keyboard is dismissed but the screen remains zoomed in and user has to manually resize the screen to fit the screen properly.

I have below plugins configured in my app:
"cordova-plugin-ionic-webview": "^5.0.0"
"cordova-plugin-inappbrowser": "^5.0.0",
"cordova-plugin-ionic-keyboard": "^2.2.0",
"cordova-plugin-ionic-webview": "^5.0.0",
"cordova-plugin-screen-orientation": "^3.0.2",
"cordova-plugin-statusbar": "^2.4.3",
"cordova-ios": "^6.3.0",

I have set meta name="viewport" tag value as below:
meta name="viewport" content="viewport-fit=cover, width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"

No source file, test, or entry point is named. Start by reproducing the iPhone keyboard and viewport behavior with the listed Cordova plugins and viewport meta tag, then determine whether the failure belongs in cordova-ios or an application/plugin configuration; done means the screen returns to its normal scale after input is dismissed.

Written by the indexing model from the issue text.