Reproduction steps:
1. Download the attached project "uaal-example_CustomerPatch"
2. Open Android Studio and load the “uaal-example_CustomerPatch/NativeAndroidApp” project
3. Connect an Android device and Deploy the app
4. In the App, Click the "Show Unity" Button on the screen
5. When the Unity app loads, notice a red button in the top left of the screen
6. Background the app and immediately foreground the app
7. Observe the red button

Expected result: The red button emains visible
Actual result: The red button is not visible (it is now rendered under Unity's layout)

Reproducible with: 2021.3.31f1, 2021.3.33f1, 2022.3.10f1, 2022.3.15f1, 2023.2.0b14, 2023.2.3f1, 2023.3.0a17
Not reproducible with: 2021.3.30f1, 2022.3.9f1, 2023.2.0b13

Reproducible with these devices:
VLNQA00518 - Google Pixel 4 (Pixel 4), CPU: Snapdragon 855 SM8150, GPU: Adreno 640, OS: 12
VLNQA00414 - Galaxy Note10+ 5G (SM-N976V), CPU: Snapdragon 855 SM8150, GPU: Adreno 640, OS: 9
VLNQA00278 - Xiaomi Redmi Note 7 (Redmi Note 7), CPU: Snapdragon 660, GPU: Adreno 512, OS: 9.0.0
VLNQA00139 - Vivo Xplay6 (vivo Xplay6), CPU: Snapdragon 820 MSM8996, GPU: Adreno 530, OS: 7.1.1
VLNQA00132 - Xiaomi Mi 5s (MI 5s), CPU: Snapdragon 820 MSM8996, GPU: Adreno 530, OS: 6.0.1

Testing environment: macOS(Intel) 14.0 Sonoma, Android Studio Flamingo | 2022.2.1 Patch 1