Multi-display rendering is displaying the first camera's view on both displays instead of displaying both camera's views when used with a mobile device

How to reproduce:
1. Open the user’s attached project
2. Build the project for an Android/iOS device
3. Connect an external display to that device and run the app
4. Observe both displays

Expected result: Both displays show different videos
Actual result: Both displays show the same video

Reproducible with: 2020.3.39f1, 2021.3.9f1, 2022.1.16f1, 2022.2.0b7, 2023.1.0a9

Reproduced on:
VLNQA00358 - iPhone 12, 14.1 iOS
VLNQA00310 - iPad Pro 12.9", 13.4.1 iOS
VLNQA00392 - iPad (9th generation), 15.0 iOS
Samsung Galaxy S10+ (SM-G975F), Android 10, CPU: NOT FOUND, GPU: Mali-G76