Does Lightroom Classic 15.4.1's Duplicate Detection feature fully support image libraries stored on exFAT volumes

Lightroom Classic 15.4.1 Duplicate Detection appears to ignore duplicate photos stored on an exFAT external drive.

Configuration:

• Windows 11
• External NVMe SSD connected via Thunderbolt
• Drive F: formatted as exFAT
• Lightroom catalog functions normally
• Photos open, edit, and save correctly on the external drive

Diagnostics performed:

• fsutil fsinfo volumeinfo F: reports:
  • File System Name: exFAT
  • Is ReadWrite
• chkdsk F: Completed with no file system errors.
• Lightroom has full access to edit and save files on the drive.

Issue:
The new Duplicate Detection feature reports "No Duplicates Found" even though duplicate images are known to exist on the external drive.

Because the drive is confirmed to be mounted read/write and Lightroom can edit the files normally, this does not appear to be a Windows permissions issue.

Could you please confirm whether Duplicate Detection in Lightroom Classic 15.4.1 fully supports image libraries stored on exFAT volumes, or whether this is a known issue requiring NTFS?

Thank you,

Ron