Hi,
Here what I've found: image is losing information in overexposed areas for 32bit hdr images developed from raw with saturation settings.
Steps to reproduce:
1. Disable Metal acceleration
2. Set assistant to 32bit linear for raw
3. Open raw image in Developing Persona
4. Set exposure +5
5. Set saturation +20%
6. Press Develop
7. Add exposure layer
8. Set exposure -5
Expected behavior: image should restore all overexposed areas like no +5 exposure was applied in Developing Persona
Actual result: image looks like all information in overexposed areas is lost.
Workaround: Enabling Metal acceleration fixes this and step #8 restores all overexposed information.