P: Lightroom randomly selects a a picture Profile.

[defaultynovrsqmy403]

I updated to LR Classic 15 and since then I am experiencing a few serious bugs that make it unusable. I am using Lightroom 15.0 on an M4 Pro Mac Mini, running the latest version of MacOS.

Primarily:

1. Lightroom randomly selects a a picture Profile. When in the Develop Module, if I select a Profile, such as "Camera Standard", the Profile shown in the top right will correctly show as whatever I select, as expected. However, sometimes the name of a seemingly random profile will flash up at the bottom of the screen, such as "Adobe Standard" and it is this random profile that is used to show the colours in the photo. I have even seen situations where my photo is changed to "Adobe Monochrome", when I selected a colour profile. If I then move to another photo and immediately back again, Lightroom CC seems to realise what profile should actually be selected and shows the photo correctly. I can edit several pictures correctly before I randomly get this behaviour.

2. Sharpening Masking Preview randomly stops working. After some time, the full-screen preview of the Masking slider, initiated when holding the Option key, stops working on the main view of the photo. However it still works in the small zoomed in view in the Detail panel. I have to restart Lightroom to get the functionality back again.

3. The brush on the AI Remove tool randomly stops showing. After using Lightroom to edit several photos, Lightroom will stop showing the brush to paint the area to be selected for removal. I then have no idea of the extent of the photo that will be removed. I have to restart Lightroom to get the functionality back again.

[Moved from 'bugs' to 'discussions' by moderator, according to forum rules. See the instructions for properly filing a bug report at the top of that section.]

[defaultynovrsqmy403]

Un update on Bug 1 above. I have managed to reproduce what leads to the problem. The problem occurs when Profile grid is open. If the mouse hovers over a profile for a period of time (without clicking to select) then the profile is previewed as expected, and returns to the actually selected profile. However, if the mouse only briefly enters a profile and briefly travels over it to exit the Grid, then the previewed profile is displayed but not correctly returned to the actually selected profile. For example, briefly traversing over the Adobe Monochrome profile (without selecting it) can leave a colour image showing as monochrome, even if the profile grid is closed.  

[Bob Somrak]

@Rikk Flohr: Photography 

Rikk,

I can duplicate the #1 (Profile) issue easily.  It sometimes takes several tries.  I have a video of this happening but I can not attach or insert it.  

[Rikk Flohr: Photography]

@Bob Somrak, I have made over a hundred attempts and cannot replicate the behavior.  Keep in mind, the Profile bezel results from both a mouse-over behavior and a select behavior. If you are quick, it can cause a momentary change. 

[defaultynovrsqmy403]

I can replicate it relatively easily when I discovered the technique. Move the mouse over a profile at reasonable pace and contrinute straight out of the Profile grid. Too slow and it is a hover that does not cause a "permanent" change. Too quick and the profile does not change at all. If the mouse is moved at just the right pace whatever profile the mouse travelled over will become permanently displayed until either another profile is actually selected, or you move to another photo and back again. I have been using lightroom for over 6 years and have never seen this before. All 3 bugs described in my main post I discovered within 20 minutes of upgrading to 15.0.

[defaultynovrsqmy403]

What makes this particularly annoying is that having selected a profile on the grid you obviously have to move the mouse to across the grid to reach the close button for the grid. In doing so you cannot avoid traversing other profiles en-route, which may trigger the issue.

[Bob Somrak]

@Rikk Flohr: Photography 

I sent you a PM with a Dropbox link to the video.

[johnrellis]

@Bob Somrak: "I have a video of this happening but I can not attach or insert it. "

Screen recordings made by Mac Quicktime are quite large and often exceed the size limit of this forum (47 MB). I use the free Handbrake program to convert them from .mov (H.264) to .mp4 (H.265 / HEVC, 1 MB/s) at the same resolution and frame rate. That shrinks them by about 20x. 

[Bob Somrak]

@johnrellis    @Rikk Flohr: Photography 

Thanks John.   I recorded a smaller video so here it is

[johnrellis]

I can reproduce the bug on my LR 15.0 / Mac OS 15.7.1, but not with LR 14.5.1.  Sometimes it happens immediately, and sometimes, it take several minutes of trying -- clearly a race condition.  The race condition could well be present in 14.5.1, but since it's a race condition, the timing could be much different and harder to reproduce.

Note that the bug is just with the image displayed in the Loupe view and Navigator -- the profile name displayed at the top of the profile browser is always correct.

Stepping frame-by-frame, here is the precise sequence of events in the recording:

1. Move the mouse from the Loupe view into the profile grid browser's Adobe Portrait thumbnail.

2. The bezel message "Adobe Portrait" appears.

3. Move the mouse up over the Adobe Monochrome thumbnail into the top of the Profile Browser panel.

4. The bezel is replaced by "Adobe Monochrome" (even though the mouse is no longer over its thumbnail).

5. The image in Loupe view and the Navigator is replaced by a monochrome preview.

6. The bezel "Adobe Monochrome" disappears, while the name of the profile at the top of the profile browser hasn't changed and remains "Adobe Color".

7. Using left cursor to move to another image in Develop and then right cursor to come back restores the correct image preview.

The race condition is likely at steps 3 - 5.

[Bob Somrak]

@johnrellis 

Switching photos does fix the display of the wrong profile but some profile changes are subtle so you may not notice.  The problem is you can go ahead and edit with the wrong profile displayed so this is a nasty bug.  I just use LIST view because the bug does not appear to manifest itself using List view (at least so far)

[defaultynovrsqmy403]

What I have not tested is whether bugs 2 and 3 are manifestations of bug 1 - that once bug 1 has been triggered, other live updates become unreliable. Will update if I get more information. For the moment, assume they are unrelated. All 3 are serious issues.

[Bob Somrak]

@defaultynovrsqmy403 

I only use List view.  Luckily I have not had this happen using the Profile Browser LIST view.  It seems to happen only with GRID view.  Unfortunately these random issues are hard to fix but #1 is VERY repeatable for me.

[defaultynovrsqmy403]

If the issue is a race condition it may be caused by MacOS failing to send both the enter and exit events as the mouse enters the grid box. Or by LR failing to respond to them. Only a debug trace of the events within LR could answer that question. If it helps, I originally noticed the issue on MacOS 25. I knew that having updated LR CC I could not easily go back to LR 14. So I updated my Mac to MacOS 26.1, but it did not resolve any of the issues.

[defaultynovrsqmy403]

I intended to say LR Classic.

[DdeGannes]

I made a quick check on my Windows laptop and I find the Profile Browser very sensitive and if you CROS one from one to another and the display changes both the main display and the preview window but the change does not change unless you actually click another profile. This refers to number #1 in the original post.

[DdeGannes]

I have revisited this issue at least a dozen times last night and again today after the recent posts and I do not have this issue on my Windows laptop..

@Bob Somrak , @defaultynovrsqmy403  Please indicate what Version (numeric number) of macOS you are working on?

[Bob Somrak]

@DdeGannes 

Macos 26.1

[defaultynovrsqmy403]

I just noticed that my original post has been renamed to refer to the picture profile issue (Bug 1). So far, there has been no discussion about bugs 2 and 3. If someone from Adobe is reading this thread I hope someone can investigate the other two.

[johnrellis]

@defaultynovrsqmy403: "I just noticed that my original post has been renamed to refer to the picture profile issue (Bug 1). So far, there has been no discussion about bugs 2 and 3."

It would be best to start separate threads for each. In general, it's best to have one thread for each separate issue (unless it's clear that they have the same underlying cause, which isn't the case here).

[defaultynovrsqmy403]

Will do. I just deliberately triggered Bug 1 and can confirm that Bugs 2 and 3 were not not present, so the 3 are unrelated. Will start 2 separate threads. 

[defaultynovrsqmy403]

After a small amount of additional investigation Bugs 2 and 3 are related to Bug 1. See my later post on this thread.

[defaultynovrsqmy403]

I have spent a few minutes investigating bugs 2 and 3. I believe I have discovered a way to reliably reproduce them. They are probably both related to Bug 1.

1. Deliberately trigger Bug 1, for example to cause a colour photo to be shown in an incorrect black and white profile.

2. Use either the sharpening mask or AI removal tool on the seeming B&W photo to show that then both appear to work. In other words, to begin with neither bugs 2 and 3 appear to occur.

3. Select another photo in grid view.

4. Return to the original photo, which will now correctly show in the correct colour profile. However, neither the sharpening mask or AI removal tool will work correctly, as described in Bugs 2 and 3.

[Bob Somrak]

I checked this in the newly released LrC 15.0.1 and I CAN NOT repeat the behavior so I appears to be working correctly now.    @defaultynovrsqmy403 has 15.0.1 solved all the issues for you?

[defaultynovrsqmy403]

I just updated to 15.0.1 and also CAN NOT repeat the behaviour. In 15.0.1 the timings for showing a preview of a profile when the mouse moves into the box are much less aggressive than 15.0 - you need to hover for longer, rather than an almost immediate preview. Good news.