Lightroom Classic does not detect or import exported JPEGs (even when dragging files)

Since the latest Lightroom Classic update, I’m experiencing a serious issue with importing exported JPEG files.

Workflow:

1. I work with DNG files in a shared workflow (catalog opened locally after being edited remotely).

2. I export JPEG files (same filename as the DNG, e.g. IMG_1234.DNG → IMG_1234.jpg) into the same folder.

3. I try to import or synchronize that folder to include the JPEGs in the catalog.

Issue:

• Lightroom does NOT detect the JPEG files when synchronizing the folder.

• In the Import dialog, even when selecting “All Photographs”, the JPEGs do NOT appear.

• The option “Don’t import suspected duplicates” is disabled.

• Dragging the JPEG files directly into Lightroom also does NOT import them.

• The files are visible in Finder and are valid JPEGs.

Additional observations:

• This did NOT happen in previous versions of Lightroom Classic.

• It happens consistently across multiple folders.

• Renaming the JPEG files (e.g. adding a suffix) makes them importable again.

• Exporting JPEGs with a different filename also avoids the issue.

This suggests Lightroom is incorrectly treating these JPEGs as non-importable duplicates or related files. I don’t want to change the name, because I need it being the same that DNG.

System:

• Lightroom Classic version: 15.3

• OS: macOS