bug: ion-back-button ignores global config for backButtonText

[vadimwe]

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

Current Behavior

ion-back-button ignores global config:

IonicModule.forRoot({ backButtonText: '', }),

Expected Behavior

back button contains only icon

Steps to Reproduce

Update to "@ionic/angular": "^5.8.3" with "@angular/*": "~12.2.9"

Code Reproduction URL

No response

Ionic Info

Ionic:

Ionic CLI : 6.17.1 (/usr/local/lib/node_modules/@ionic/cli)
Ionic Framework : @ionic/angular 5.8.3
@angular-devkit/build-angular : 12.2.9
@angular-devkit/schematics : 12.0.3
@angular/cli : 12.2.9
@ionic/angular-toolkit : 4.0.0

Cordova:

Cordova CLI : 10.0.0
Cordova Platforms : android 10.1.0, ios 6.2.0
Cordova Plugins : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 5.0.0, (and 16 other plugins)

Utility:

cordova-res : 0.15.3
native-run : 1.4.1

System:

Android SDK Tools : 26.1.1 (/Users/vs/Library/Android/sdk)
ios-deploy : 1.11.4
ios-sim : 8.0.2
NodeJS : v12.18.3 (/usr/local/bin/node)
npm : 6.14.6
OS : macOS Big Sur
Xcode : Xcode 13.0 Build version 13A233

Additional Information

No response

[site-chenwei]

I also encountered this problem

[vadimwe]

Quick fix if you need.

variables.scss or another global file:
ion-back-button { &::part(text) { display: none; } }

[EinfachHans]

I debugged a bit. Looks like this commit causes this.

config.reset(configObj); in the initialize is first called with:

_zoneGate: function(),
backButtonText: "",
persistConfig: false

and then called again (from defineCustomElements.globalScripts) with:

m: Map {"persistConfig" => false, "backButtonText" => "", "_zoneGate" => function, "mode" => "ios"} ,
persistConfig: false

[liamdebeasi]

Thanks for the issue. This has been resolved via #24054, and a fix will be available in an upcoming release of Ionic Framework.

[liamdebeasi]

This is fixed in Ionic Angular v5.8.4. Thanks for the report!

npm install @ionic/angular@latest

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.