bug: Ionic 6 production build causes white screen in ios versions 14.4 and lower

Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already report this problem, without success.

Ionic Framework Version

• v4.x
• v5.x
• v6.x
• Nightly

Current Behavior

ionic-angular app with production build (–prod) causes “ionic white screen of death” in ios versions 13.5 and 14.4 (both in simulators and real device) but not sure about the real span of version for this behaviour. app works and responds in the background but nothing on screen

Expected Behavior

ionic-angular production build should work without problem in these versions of ios

Steps to Reproduce

create blank ionic-angular app with either capacitor or cordova capacitor: ionic build --prod npx cap sync

cordova: ionic cordova build ios --prod

when running the app no problem in ios 16.0 but white screen on mentioned older versions of ios

Code Reproduction URL

No response

Ionic Info

Ionic:

Ionic CLI : 6.20.3 (/Users/emreakkoc/.nvm/versions/node/v16.10.0/lib/node_modules/@ionic/cli) Ionic Framework : @ionic/angular 6.3.3 @angular-devkit/build-angular : 14.2.7 @angular-devkit/schematics : 14.2.7 @angular/cli : 14.2.7 @ionic/angular-toolkit : 6.1.0

Cordova:

Cordova CLI : 11.0.0 Cordova Platforms : ios 6.0.0 Cordova Plugins : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 5.0.0, (and 3 other plugins)

Utility:

cordova-res : 0.15.4 native-run : 1.7.1

System:

ios-deploy : 1.11.4 ios-sim : 8.0.2 NodeJS : v16.10.0 (/Users/emreakkoc/.nvm/versions/node/v16.10.0/bin/node) npm : 8.19.2 OS : macOS Monterey Xcode : Xcode 14.0.1 Build version 14A400

Additional Information

–prod flag is deprecated since angular 13 but ionic cordova build ios --configuration production also did not help and causes the same behaviour

[liamdebeasi]

Thanks for the report. Can you update your .browserslistrc or browserslist file to have the following contents and let me know if it resolves the issue?

Chrome >=60
Firefox >=63
Edge >=79
Safari >=13
iOS >=13
Firefox ESR

[lincolnthree]

This also solved the problem for us. Great thought about putting this in the migration notes! Thanks Liam!