Translucent activity issues after using yandex sdk

[sirekanyan]

After we return from Yandex Login SDK screen, there is a possibility that Translucent activities won't work properly. The bug only occurred when using BrowserLoginStrategy. Never happened for NativeLoginStrategy or WebViewLoginStrategy.

I've created a small project where the problem can be reproduced: https://github.com/sirekanyan/sample-yandex-login-sdk-bug

Android version: 9
Device: Google Pixel

I can reproduce it only on Google Pixel devices (tried two different devices). Cannot reproduce on any other device models (tried Google Nexus 6P and couple Samsung devices)

Steps to reproduce:

0. Install demo project https://github.com/sirekanyan/sample-yandex-login-sdk-bug
1. Click button "Open browser activity"
2. Click back button
3. Click button "Open translucent activity"

Expected: translucent activity opened
Actual: activity opening with animation, but then suddenly disappears

(repeat steps 1-3 if needed, sometimes bug isn't reproduced the first time)

[HotIceCream]

I tried to reproduce your case on Emulator with Android 9. Translucent activity opened successfully.

Could you provide a video? Is there something interesting maybe in logcat?

Now I don't understand how independent activities linked.

[sirekanyan]

2videos.zip
There are two videos in a zip archive. On the first video I click on first button, on the second video -- on the second button.

I cannot understand how activities linked too.

I even watched with dumpsys the state of Translucent activity and it was RESUMED. But in fact it is not visible on screen (but clicks on it work, as you can see from my video)

[sirekanyan]

I've added logs to activity callbacks and here is logcat translucent-activity-logs.txt

[sirekanyan]

I added a new test case in my demo app. Now the bug can be reproduced on emulator:
Pixel API 28 | 1080 × 1920: 420dpi | 28 | Android 9.0 (Google Play) | x86_64 | 9.0 GB

video:
device-2019-06-03-150420.webm.zip

logs:
ya-logs-all.txt
ya-logs-filtered.txt