P: Lightroom Classic 15.6 – Develop sliders jump to minimum value when clicked

P: Lightroom Classic 15.6 – Develop sliders jump to minimum value when clicked

Since updating to Lightroom Classic 15.6, every Develop module slider jumps to its far-left (minimum) value as soon as I click it. When I try to make a small adjustment, such as raising Exposure slightly, the slider snaps all the way to the most negative setting.

Steps to reproduce:
1. Open any photo in the Develop module.
2. Click and drag any slider (Exposure, Contrast, Highlights, Shadows, etc.).
3. The slider immediately jumps to its minimum value instead of moving from its current position.

Expected: The slider moves smoothly from its current value.
Actual: The slider jumps to the far-left minimum on click.

Notes:
- This started immediately after updating to 15.6. Sliders worked normally before the update.
- Typing values directly into the number field works correctly.
- This affects all Develop sliders, which makes normal editing impossible.

System:
- Lightroom Classic 15.6
- OS: [macOS/Windows + version]
- Computer: [model]

I edit professionally, and this bug is significantly slowing down my client work. Please prioritize a fix, and let me know if you need a screen recording or system info file.