Lightroom Clone/Heal tool is leaving ghost images

[Jeff Eppinette]

Lightroom Clone/Heal tool is leaving ghost images even though the opacity is set at 100%. The only change I know of between the time the clone tool worked and didn't work was that the Lightroom database was upgraded and now my files are being imported as .dng files. Is anyone else seeing this anomaly in the Lightroom Clone/Heal tool?

I'm using Lightroom Classic 10.0 release in Windows 10. I've attached an example where cloning or healing over a fire alarm housing on the wall leaves a ghost image.

Thanks in advance for your help.

Jeff

[Jeff Eppinette · Accepted solution]

After reading other forums, I found that holding down Ctrl-Alt-Shift when starting Lightroom and resetting the preferences resolved the ghosting issue. That's really weird.