P: (GPU) Develop/Edit view & Export artifacts after 14.4.1 Update (AMD-only) (affects Cr, LrC & LrD)

Assuming, as is most likely, this is a graphics driver bug, we'll have to wait for Apple to release a new version of Mac OS containing the fixed driver. (It's conceivable that Adobe might decide to work around the bug in a new version of LR, but in general developers are very reluctant to include such workarounds, since they quickly accumulate and make the code very hard to maintain and upgrade.)

I haven't commented on this in a few days but thought I would jump in.  I understand Adobe and Radeon are working on getting this issue sorted out.  I was notified of a "Critical update" for Lightroom this morning.  There were no details on what it was (see the included image).  So, I updated to the latest version of LR and sure enough, when using Enhance to remove noise from high ISO images, it still creates these random, white, static filled boxes in various spots on the completed edit.  These artifacts appear on the preview in LR and the preview of the image on my Mac (using Preview).  When I open the edited image however, the artifacts only show up on a few of the images.  If I delete the images with the artifacts from my hard drive and from LR catalog and re-run Enhance, about 75% of the time it will process the image correctly.  This is very strange.   Does anyone actually know the details of what this update purportedly fixed?  What was the critical issue?    (Because it wasn't the radeon graphics driver issue...).  Thanks!!

The artifact problem appears to be resolved with the workaround suggested but now I'm seeing another problem. The Blur function in LR Classic no longer works for me. Once I select "Apply" it goes through its usual spin cycle and then when it's done, there is no focus range. The entire image becomes blurred. I've used this quite extensively previously with some pretty good results (I think this needs further refinement anyway. If I select the mask and then background, it usually does a really good job. I would expect the blur to be the same but in fact, it's not as refined.)

"Will this [GPU problem] be fixed or is this the end of story?"

If, as is most likely, this is caused by a buggy graphics driver, then AMD will have to supply a fixed driver to Apple, which will include it in its next Mac OS release. Adobe has said they're working with Apple on the issue, but Adobe rarely discloses if or when bugs will be fixed.

Apple engineers are getting ready for the annual developer conference in less than two weeks, there will almost certainly not be any updates to Sonoma before then. FWIW, I have not seen this happen since installing 14.5 but that may not mean anything.

A number of days ago I upgraded to OS 14.5 Sonoma and updated to the latest version of LR Classic 13.3 Camera Raw 16.3. Turned on the Graphics Processor and everything was fine until a few moments ago, when I started getting the strange artifacting again. Did as was suggested and put the Graphics Processor on Custom and set it for the monitor only and the problem went away. I assume that the Graphics Processor is no longer working to full capacity now. Will this be fixed or is this the end of story?

@Manny_Pandya, see here for the cause and workarounds:

https://community.adobe.com/t5/lightroom-classic-bugs/p-gpu-develop-edit-view-amp-export-artifacts-after-14-4-1-update-amd-only-affects-cr-lrc-amp-lrd/idc-p/14602754#M52470

@Joerg_S., see here for the cause and workarounds:

https://community.adobe.com/t5/lightroom-classic-bugs/p-gpu-develop-edit-view-amp-export-artifacts-after-14-4-1-update-amd-only-affects-cr-lrc-amp-lrd/idc-p/14602754#M52470

Thank you, @johnrellis.  Restarting fixed it (at least temporarily).  And thanks for moving my question to the appropriate forum.

Macs use macOS, not iOS (which is iPhones.)

This is a known problem. I'm seeing it intermittently on a 2019 MacBook Pro/Radeon card. Restarting the computer seems to fix it.