Reproduction steps:
1. Make sure your display supports HDR and HDR is enabled
2. Open the attached “IN-119083.zip” project
3. Open the “SampleScene”
4. Enter Play mode
5. Open the Frame Debugger Window (Window > Analysis > Frame Debugger)
6. Under “Ints” dropdown, observe that “_HDR_OVERLAY” and “_HDRColorspace” are enabled
7. Close the Frame Debugger Window
8. From the Hierarchy, select the “Reflection Probe” GameObject and enable it
9. Open the Frame Debugger Window again
10. Observe the “Ints” dropdown again

Expected result: HDR output remains enabled
Actual result: HDR output is disabled (the “Ints” dropdown is greyed out, empty)

Reproducible with: 6000.0.0b13, 6000.0.59f1, 6000.2.7f1, 6000.3.0b4, 6000.4.0a1
Not reproducible with: 6000.0.0b12

Reproducible on: Windows 11
Not reproducible on: no other environments tested

Note:
- Having the Reflection Probe enabled when the application starts maintains HDR output, but having the Probe disabled and then enabled sometime after the application starts deactivates HDR output