Building for iOS with "--prod --release" changes numeric keypad display

Hello everyone - I stumbled on a weird behavior earlier today. Any ideas why this command:

ionic cordova build ios

would result in a standard number pad keyboard like this:

Whereas building with

ionic cordova build ios --prod --release

would result in this normal keyboard showing?

The number pad is intended and I always wondered why it didn’t work on iOS releases. This happens on devices or simulators from iOS10-12.

Thanks for any input on this. I am okay with either result at this point since what I lose in usability of the number pad I gain in the ability for users to enter decimal points.