How to reproduce:
1. Open the “ReproProject.zip“ project
2. Open the “Test“ scene
3. Build and Run for iOS
4. Open the “Test.png“ image on your PC
5. Point the back camera of the iOS device to the “Test.png“ image
6. Observe the “ADDED :: referenceImage.guid“ log in the Console panel

Expected result: The GUID is not “00000000-0000-0000-0000-000000000000“
Actual result: The GUID is “00000000-0000-0000-0000-000000000000“

Reproducible with: 6.3.0-pre.2, 6.3.0 (6000.0.63f1, 6000.2.14f1), 6.4.0-pre.1 (6000.0.63f1, 6000.2.14f1, 6000.3.0f1, 6000.4.0a5, 6000.5.0a2)
Not reproducible with: 6.2.1, 6.3.0-pre.1, (6000.2.14f1)

Reproducible environment: macOS 15.7.1 (M4 Max)
Not reproducible environment: No other environment tested

Reproducible with these devices:
VLNQA00626, iPhone 16 (MYE73QN/A), CPU: Apple A18 Pro, OS: 18.5
VLNQA00491, iPhone 14 Pro (MQ083PX/A), CPU: Apple A16 Bionic, OS: 16.0
VLNQA00416, iPhone 13 Pro (MLVA3ET/A), CPU: Apple A15 Bionic, OS: 17.6.1
VLNQA00535, iPhone XS (MT9F2ET/A), CPU: Apple A12 Bionic, OS: 17.6.1
VLNQA00232, iPhone 8 Plus (MQ8M2ET/A), CPU: Apple A11 Bionic, OS: 16.7.10
VLNQA00612, Samsung Galaxy S24 (SM-S921B), Android 15, CPU: Exynos 2400, GPU: Ltd.

Note: Reproducible with ARKit and ARCore