How to reproduce:
1. Set up a Web debugging Proxy application (more information in the comments)
2. Set up the test device with the correct certificate
3. Open the “SSLTestProject“ project
4. Open the “SampleScene“
5. Build and Run for Android
6. Open the Web debugging Proxy application
7. In the test device click on the “Send Request“ button
8. In the Web debugging Proxy application observe the “https://example.com/“ requests header content

Expected result: Header content is not visible
Actual result: Header content is visible

Reproducible with: 2022.3.55f1, 2022.3.58f1, 6000.0.38f1, 6000.1.0b5, 6000.2.0a3
Not reproducible with: 2022.3.54f1

Reproducible environment: macOS 15.2 (M4 Max)
Not reproducible environment: No other environment tested

Reproducible with these devices:
VLNQA00511, Samsung Galaxy S8 (SM-G950F), Android 9, CPU: Exynos 9 Octa 8895, GPU: Mali-G71
VLNQA00335, Samsung Galaxy S20+ 5G (SM-G986B), Android 10, CPU: Exynos 990, GPU: Mali-G77
VLNQA00518, Google Pixel 4 (Pixel 4), Android 13, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640
VLNQA00232, iPhone 8 Plus (MQ8M2ET/A), CPU: Apple A11 Bionic, GPU: Apple designed, OS: 16.7.10

Note: Could not test the Editor or Standalone (Error: “Curl error 60: Cert verify failed. Certificate is not correctly signed by a trusted CA. UnityTls error code: 7”)