P: Removing Denoise from a large number of files fails

Having this issue as well as when trying to add the masks to multiple photos. 

Thanks for the reports. A bug has been logged for the team to review. 

​@DClark064 , ​@johnrellis 

Confirming the same behaviour on my Windows 11 PC. After applying Denoise to 109 images using Auto Sync in Develop, then trying to remove the Denoise from all 109 images using Auto Sync (uncheck Denoise) stops after 21 image processed. Cancelling the process in the Progress Bar renders the remaining photos uneditable and the selected photo’s thumbnail in the Filmstrip changes to blank (grey). Normal operation resumes after a restart of LrC. Removing Denoise using the same method for the remaining photos stops at 21 photos; repeat.

Definitely a serious bug.

​@Sameer K, ​@Rikk Flohr_Photography, I see the same behavior as ​@DClark064. Please consider moving to bugs.

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I see the same misbehavior on LR 15.3 / Mac. After the first Auto Sync of unchecking Denoise on 120 photos, the progress bar stopped moving after 21 photos, and LR was consuming no CPU:

Clicking “x” cancels the progress bar and closes it. However, when I try to take any of the remaining 99 photos into Develop, all the settings panels are greyed out:

But no warning about AI running in background is displayed.  I have to restart LR, and it shows this warning:

This is pretty clearly a bug with the new background processing of AI.

Error, it removed denoise from 21, not 18, on the third round.  It continued removing 21 for each of 5 rounds until the sixth round when only 10 were left.  It removed the final 10 without error. 

The bug reported here is that LrC can only remove denoise from 21 photos at a time (for the 50MP Sony A1m2 photos tested here). The problem of removing denoise from files and recovering the storage space consumed by denoise is more extensive discussion, but there are significant problems beyond being able to remove the denoise from a large block of photos.