Participant

Question

P: Mask sliders not automatically resetting

Forum|Forum|17 days ago
June 22, 2026
5 replies
71 views

Since the recent update, I’m having a lot of issues with masks. When I create a new mask (example a linear gradient mask) some of the sliders have already been adjusted. I have the ‘Reset sliders automatically’ box checked. Additionally, sometimes I am adjusting the sliders for a mask and the change is not being applied to the image (like if I change the exposure slider the selected area does not get brighter/darker). Finally, if I right click on a mask » Delete » nothing happens and the mask isn’t deleted. Is this a known issue? Any tips on how to resolve this please?

I am using Lightroom version 9.4 and Windows 11.

popejo

Participant

I can confirm that I’m seeing the exact same issue on my system as well. My environment is:

MacOS 26.5.2 / Lightroom 9.4.1 / (Macbook Pro M5 with external monitor)

The Masking panel behaves exactly as described: when switching between masks on the same photo, the UI keeps showing the slider values from the previously edited mask instead of updating to the correct settings of the newly selected one. The underlying mask data seems intact, and switching to another photo and back forces the panel to refresh properly.

So yes, same reproducible behaviour here.

Maksim Leonov

Participant

Lightroom version: 9.4 MAS arm64 [ 20260610-2051-a96e304 ] (Jun 10 2026)

NGL Version: 1.43.0.5

WF Version: 8.4 9cad17e

VF Version: 1.0.164

HIL Version: 40501

CAI Version: c2pa-c/0.6.0 c2pa-rs/0.46.0

PH Version: 6.1.1

Adobe GSDK Version: 1.4.0.210

Catalog ID: c520faf5dd8f43c3aa33782c182c1fca

Operating System: macOS

OS Version: macOS 26.5.1 (25F80)

Application Architecture: arm64

Computer Model: MacBookPro18,1 / Apple M1 Pro

Logical Processor Count: 10

Built-in Memory Available to Lightroom: 16,384.0 MB

Real Memory Used by Lightroom: 3,124.0 MB (19.0%)

Peak Memory Used by Lightroom: 4,186.0 MB

Cache Memory Size: 3,405.8 MB

Camera Raw Internal Version: 18.4 [ 2608 ]

Maximum Number of Threads Used by Camera Raw: 6

Camera Raw SIMD Optimization: Neon

Camera Raw Virtual Memory: 1452MB / 6144MB (23%)

Display: 2992x1934 Dark Mode: No

Graphics Processor Info: Metal: Apple M1

Pro Graphics Processor Info: loaded: Yes, supported: Yes, compute: Yes, init: I4_GPU4, hardware: success, software: success, al: Yes, dl: No

OS Media Support: true

Application Folder: /Applications

Preferences Folder: /Users/maksimleonov/Library/Containers/com.adobe.mas.lightroomCC/Data/Library/Application

Support/Adobe/Lightroom CC Library Folder: /Users/maksimleonov/Pictures/Lightroom

Library.lrlibrary

Srishti Bali

Community Manager

Hi @Maksim Leonov

Thank you for the detailed report and for outlining the behavior so clearly. We'd like to gather a bit more information to help us investigate:

Does this issue occur with every image, or only with specific photos?
Does it happen with all types of masks (Subject, Sky, Brush, Linear/Radial Gradient, etc.), or only certain mask types?
Is the issue limited to a particular file format (RAW, DNG, JPEG, HEIC, TIFF, etc.)?
Does the problem occur in a brand-new catalog with newly imported images, or only in an existing catalog?
If you create a new mask on the affected image, does the same behavior occur?
System info from Help Menu (Help> System Info> Copy-paste the details here)

If possible, please share a short screen recording demonstrating the issue. Seeing the Masking panel as you switch between masks on the same image would be especially helpful, as it will allow us to verify whether this is a UI refresh issue and attempt to reproduce it on our end.

We appreciate you taking the time to report this and look forward to your response.

Thanks, Srishti Bali | Community & Engagement Strategist, Digital Imaging | Adobe

Maksim Leonov

Participant

Hello, Srishti Bali, thank you for your interest in my post.

1. The problem occurs with all images. However, I only work with RAW files and DNG from DXO PureRAW6.

2. I don't know for sure about all masks, but I'm pretty sure that values can be mixed between the Linear Gradient and the Subject mask. And also between Linear Gradients, which I use all the time. I really appreciate Lightroom for this feature, it's the only one that fully implements this functionality. So, I'm disappointed with this issue, it really hinders my work.

3. The problem occurs with photos from any catalog, even from the Cloud.

4. The problem arises precisely when creating a new mask. More precisely, the meaning of the new mask is shown in the previous one. And so on. They get mixed up. And this confuses me. In reality, they don't change. It's just the visual data that gets mixed up. If you jump from photo to photo and then back, the values will be displayed correctly. But in the process, jumping around the images after each mask is very inconvenient, you must admit.

5. I'll be working tomorrow and try to record a screen shot if I can. But that's all the information for now. Let me know if you need more details.

6.The next post contains information about the system >

Sincerely, Maksim

Maksim Leonov

Participant

Lightroom version: 9.4 MAS arm64 [ 20260610-2051-a96e304 ] (Jun 10 2026)

NGL Version: 1.43.0.5

WF Version: 8.4 9cad17e

VF Version: 1.0.164

HIL Version: 40501

CAI Version: c2pa-c/0.6.0 c2pa-rs/0.46.0

PH Version: 6.1.1

Adobe GSDK Version: 1.4.0.210

Catalog ID: c520faf5dd8f43c3aa33782c182c1fca

Operating System: macOS

OS Version: macOS 26.5.1 (25F80)

Application Architecture: arm64

Computer Model: MacBookPro18,1 / Apple M1 Pro

Logical Processor Count: 10

Built-in Memory Available to Lightroom: 16,384.0 MB

Real Memory Used by Lightroom: 3,124.0 MB (19.0%)

Peak Memory Used by Lightroom: 4,186.0 MB

Cache Memory Size: 3,405.8 MB

Camera Raw Internal Version: 18.4 [ 2608 ]

Maximum Number of Threads Used by Camera Raw: 6

Camera Raw SIMD Optimization: Neon

Camera Raw Virtual Memory: 1452MB / 6144MB (23%)

Display: 2992x1934 Dark Mode: No

Graphics Processor Info: Metal: Apple M1

Pro Graphics Processor Info: loaded: Yes, supported: Yes, compute: Yes, init: I4_GPU4, hardware: success, software: success, al: Yes, dl: No

OS Media Support: true

Application Folder: /Applications

Preferences Folder: /Users/maksimleonov/Library/Containers/com.adobe.mas.lightroomCC/Data/Library/Application

Support/Adobe/Lightroom CC Library Folder: /Users/maksimleonov/Pictures/Lightroom

Library.lrlibrary

Maksim Leonov

Participant

Hi everyone, I am experiencing a severe UI bug in the latest Lightroom update (v9.4) from the Mac App Store on macOS.

Environment: OS: macOS 26.5.1 App Version: Lightroom v9.4 (Mac App Store build).

Issue description: The Masking panel fails to update its state when switching between different masks on the same photo. Instead of showing the actual settings of the newly selected mask, the panel continues to display the slider values from the mask I was editing previously.

Example: 1. I select Mask 1 and set Exposure to +1.0. 2. I select Mask 2 and set Exposure to -0.5. 3. I switch back to Mask 1. The UI incorrectly shows Mask 1's Exposure as -0.5 (carrying over the values from Mask 2), even though the actual photo rendering might still look correct.

Workaround & Details: The data itself is not corrupted. If I switch to a different photo and then jump back to the original image, the UI finally refreshes and displays the correct, individual values for each mask.

A clean reinstall with complete preference and cache removal did not fix this. It seems to be a bug in how the Masking panel refreshes its UI state within the same image session in v9.4.

Anyone else seeing this on macOS? Hopefully, the team can acknowledge and patch this soon.

Claire H.

Community Manager

Hi @laura_9321, Welcome to the Lightroom Community forum! To better help you with this issue, we would like a few more details. Can you send your system info and a screen recording or screenshots of what you’re seeing with the masks and sliders? You can find your system info by going to Help > System Info, copying and pasting it into a text file, and attaching it here. Thanks! ^CH

laura_9321Author

Participant

Hi Claire, thanks for your reply! Please find attached the requested info. You can see in the recording that when I create a new linear mask a lot of the sliders are already adjusted.

Lightroom version 9.4 x64 [ 2026061.txt

Screen Recording 2026-06-27 155409.mp4

Sameer K

Community Manager

Thanks for sharing the updated, @laura_9321.

Your machine has two GPUs: the power-saving Intel® UHD Graphics and the Nvidia GeForce GTX 1660 Ti.

Please try these two suggestions:
1 - Update the graphics drivers by only using Intel's & Nvidia's auto-detect programs, Windows Update service may not offer the latest drivers.

2 - After updating the GPU drivers, try the steps below and check the results. The GPU info & Logs location on Windows is %APPDATA%\Adobe\CameraRaw. A shortcut to get to this folder on Windows is:

Press the Windows + R
Enter %APPDATA%\Adobe\CameraRaw
Rename the GPU & Logs folder in this directory by adding .old at the end. (GPU.old & Logs.old)
Launch Lightroom again.

Let me know how it goes.

Thanks!
Sameer K

(Type '@' and type my name to mention me when you reply)

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