[Android] Firestore snapshot listeners is slow to retrieve data.

首先，使用列出的 Angular、Firebase、AngularFire、Ionic 和 Capacitor 版本，在 Android 上复现第一个 Firestore 快照监听器，并将其与 iOS 和 web 进行比较。检查 compat SDK 是否会影响延迟和捕获时机或调试输出；当 Android 特有的变慢现象得到解释，并且已记录经验证的修复方案或明确的 upstream 转交时，即视为完成。

Version info

Angular: 17.3.3

Firebase: 10.10.0

AngularFire: 17.0.1

Other (e.g. Ionic/Cordova, Node, browser, operating system):
Ionic:

Ionic CLI : 7.2.0 (/Users/user/.nvm/versions/node/v18.17.0/lib/node_modules/@ionic/cli)
Ionic Framework : @ionic/angular 7.8.2
@angular-devkit/build-angular : 17.3.2
@angular-devkit/schematics : 17.3.2
@angular/cli : 17.3.2
@ionic/angular-toolkit : 11.0.1

Capacitor:

Capacitor CLI : 5.7.4
@capacitor/android : 5.7.4
@capacitor/core : 5.7.4
@capacitor/ios : 5.7.4

Utility:

cordova-res : not installed globally
native-run : 2.0.1

System:

NodeJS : v18.17.0 (/Users/user/.nvm/versions/node/v18.17.0/bin/node)
npm : 10.5.0
OS : macOS Unknown

How to reproduce these conditions

Failing test unit, Stackblitz demonstrating the problem

Steps to set up and reproduce

We have developed an Ionic Hybrid app for iOS, Android, and Web platforms, which has been functioning smoothly for the past two years. However, after multiple library updates, we have encountered an issue specific to Android devices. Retrieving the first fresh snapshot listener takes an exceptionally long time on Android, whereas iOS and web platforms retrieve the same snapshot listener in just 1 second on the same device. Android hybrid apps may take up to 60 seconds for this process.

Interestingly, restarting the app after the initial retrieval significantly improves the speed.

I am currently using the compat SDK instead of the Web modular SDK. I wonder if this choice affects the result.

Sample data and security rules

Debug output

** Errors in the JavaScript console **

** Output from firebase.database().enableLogging(true); **

** Screenshots **

Expected behavior

Actual behavior