[Bug]: Blank white screen on Ulefone Android 14 devices after code changes; fixed by clearing app cache

Inizia con il progetto di riproduzione all’indirizzo github.com/tiagoarroz/testes-ecra-branco e segui i passaggi iniziali di Ionic Angular indicati: esegui ionic build && npx cap sync android, quindi compila e installa tramite Android Studio su un dispositivo Ulefone con Android 14. Confronta l’output di Logcat collegato prima e dopo la cancellazione della cache dell’app e analizza l’inizializzazione di Android WebView e del Capacitor bridge. Il lavoro è completato quando l’app viene visualizzata dopo una nuova compilazione e reinstallazione senza dover cancellare manualmente la cache.

Capacitor Version

💊 Capacitor Doctor 💊

Latest Dependencies:

@capacitor/cli: 7.4.3
@capacitor/core: 7.4.3
@capacitor/android: 7.4.3
@capacitor/ios: 7.4.3

Installed Dependencies:

@capacitor/ios: not installed
@capacitor/cli: 7.4.3
@capacitor/core: 7.4.3
@capacitor/android: 7.4.3

[success] Android looking great! 👌

Other API Details

npm --version output: 11.2.0
node --version output: v22.14.0

Platforms Affected

• iOS
• Android
• Web

Current Behavior

After making any code change (e.g., adding a simple

or variable to a component) and rebuilding/reinstalling the app, it launches to a completely blank white screen on specific Ulefone Android 14 devices (tested on Armor series) (MediaTek Helio G36 8 Core processor with com.google.android.webview version 126-140). No console errors or crashes occur—the app just fails to render any content.
Clearing the app's cache (Settings > Apps > [App] > Storage > Clear Cache) fixes it temporarily, and the app works until the next rebuild. This does not happen on other Android 14 devices (e.g., Samsung, Pixel) or emulators.
Logcat shows WebView initialization issues before cache clear. After cache clear, WebView loads cleanly, and Capacitor bridge starts successfully.

Expected Behavior

The app should load and render normally after any rebuild/install, without requiring manual cache clearing. WebView should initialize consistently across devices.

Project Reproduction

https://github.com/tiagoarroz/testes-ecra-branco

Additional Information

Steps to Reproduce

Create a new Ionic Angular tabs starter app: ionic start test-blank tabs --type=angular --capacitor.
Make a minor change, e.g., in src/app/explore-container/explore-container.component.html, add

a small change for testing {{testVariable}}
and in .ts, add testVariable = "test variable".
Build and sync: ionic build && npx cap sync android.
Open in Android Studio, build, and install APK on a Ulefone Android 14 device.
Launch the app → blank white screen.
Clear app cache → app works.

Logcat before cleaning cache
https://pastebin.com/raw/bnScJT0j

Logcat after cleaning cache
https://pastebin.com/raw/tGzf39Y3