P: Noise Reduction causes green border on Sony ARW files

Description:
When applying Noise Reduction in Lightroom Classic 14.4 to ARW files from my Sony A7C2, I encounter persistent green borders appearing along the left, right, or bottom edge of the image.

This happens specifically when I enable the “Noise Reduction” checkbox in the “Detail” panel. Lightroom then automatically processes the image using AI-based noise reduction. Once the processing finishes, a slider appears to adjust the strength (default is in the middle).

Regardless of whether I increase or decrease the slider, the green border always appears—only the intensity of the green varies (e.g. sometimes a very bright green, other times more subtle).

This issue:

• Occurs only on Sony A7C2 .ARW files.

• Does not occur on Olympus .ORF files tested with the exact same steps.

• Does not exist in the original image (confirmed with ACR, Capture One, and FastRawViewer).

• Can be slightly reduced by disabling GPU acceleration or converting the file to DNG.

• Is clearly related to how Lightroom interprets and renders Sony RAW files during AI noise reduction.

Steps to reproduce:

1. Import a Sony A7C2 .ARW RAW file into Lightroom Classic 14.4

2. Go to “Detail” panel

3. Check the “Noise Reduction” box (triggering AI-based noise processing)

4. Wait for the processing to complete and use the slider to adjust strength

5. Observe green border artifacts along the image edges regardless of slider position

System Info:

• macOS 15.4.1

• Lightroom Classic 14.4

Expected Result:
Noise reduction should clean up image noise without introducing any unnatural edge coloration or fringing.

Actual Result:
Enabling Noise Reduction introduces green color fringing/artifacts along image borders, especially visible on bright backgrounds.

Attachments:
A zipped folder is available containing:

• An original .ARW file

• A screenshot showing the green border artifact after noise reduction