Reproduction steps:
1. Open the attached user's project "SecondScreenOrientation.zip"
2. Build and Run the project with LG V50
3. Open the installed app on the second screen
4. Rotate the device

Expected result: Screen orientation is working on the second display after the initial screen rotation
Actual result: Screen orientation is not working on the second display after the initial screen rotation (See attached SecondScreenOrientation.mp4)

Reproduces on: 2018.4.26f1, 2019.4.9f1, 2020.1.4f1, 2020.2.0a21

Reproduced with these devices:
N/A, LG V50 ThinQ 5G (LMM-V500N), Android 10, CPU: Qualcomm Snapdragon 855 (SM8150), Adreno 640

Does not reproduce with these devices:
VLNQA00273, Vivo V1821BA (V1821A), Android 9, CPU: Snapdragon 845 SDM845, GPU: Adreno (TM) 630
N/A, Samsung Galaxy Fold (SM-F900F), Android 10, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640

Notes:
-Screen orientation on the main screen is working as expected