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stephanieh54345612
Participant
October 1, 2026
Open for Voting

P: LrC 15.6: Sliders bouncing in the Develop module

Lightroom was working perfectly this morning.. I come to load in new images and edit some while sitting here.. and as soon as Lightroom opened up - I tried to slide exposure (and other ones to test those...) and the slider immediately jumps one way or another. 

 

I have reset preferences, turned off GPU.. NOTHING is helping.. please help me! 

      Pinned Reply By Sameer K

      Hi All! Note from the team:

      “On macOS Tahoe 26.3 or earlier, if the Develop module sliders move erratically after upgrading to Lightroom Classic 15.6, update to the latest Tahoe version (26.7, or later).”

       

      Thanks!
      Sameer K

      View reply

      161 replies

      Mick2445040273mc
      Participant
      October 22, 2026

      Thanks - updating the OS to the latest has resolved my sliders snapping left issue. Obvious to check really now I think about it. Will put that down to experience. Thanks once again.

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      Mick2445040273mc
      Participant
      October 22, 2026

      Lightroom Classic. Trying to grab a slider results in the slider snapping to the left - have tried clearing Lightroom Classic cache with no success - this only happens on my Mac mini M4 but is fine on MacBook Pro M1, same 15.6 release.

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      Community Expert
      AxelMattCommunity Expert
      Community Expert
      October 22, 2026

      ​@Mick2445040273mc Do you’ve seen ​@Sameer K ‘s pinned answer?

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      My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 26H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 9 - PureRAW 6 - Topaz Photo AI
      Mick2445040273mc
      Participant
      October 22, 2026

      Thanks for the heads up. I’m on Tahoe 26.3 so I’ll try that. Cheers

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      Claire H.
      Community Manager
      Claire H.Community Manager
      Community Manager
      October 21, 2026

      Hi ​@Eliza3714341552h7, Welcome to the Lightroom Classic 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 of the issue? 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

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      Eliza3714341552h7
      Participant
      October 22, 2026

      Lightroom Classic version: 15.6 [ 202609251514-f839cde9 ]
      License: Creative Cloud
      Language setting: en-US
      Operating system: Mac OS 26
      Version: 26.0.0 [25A354]
      Application architecture: arm64
      Logical processor count: 10
      Processor speed: NA
      SqLite Version: 3.45.1
      Adobe GSDK Version: 1.4.0.213

      Built-in memory: 24,576.0 MB
      Dedicated GPU memory used by Lightroom: 1,744.0MB / 18,186.2MB (9%)
      Real memory available to Lightroom: 24,576.0 MB
      Real memory used by Lightroom: 1,910.4 MB (7.7%)
      Virtual memory used by Lightroom: 436,181.4 MB
      Memory cache size: 891.7MB
      Internal Camera Raw version: 18.7 [ 2743 ]
      Maximum thread count used by Camera Raw: 5
      Camera Raw SIMD optimization: SSE2
      Camera Raw virtual memory: 351MB / 12287MB (2%)
      Camera Raw real memory: 352MB / 24576MB (1%)

      Cache1: 
      Final1- RAM:202.0MB, VRAM:35.0MB, DSC03896.ARW
      NT- RAM:202.0MB, VRAM:35.0MB, Combined:237.0MB

      Cache2: 
      m:891.7MB, n:189.1MB

      U-main: 166.0MB

      Standard Preview Size: 4480 pixels
      Displays: 1) 4480x2520

      Graphics Processor Info: 
      Metal: Apple M4
      Init State: GPU for Export supported by default
      User Preference: Auto
      Enable HDR in Library: ON
      GPU for Preview Generation: Auto (S5_17)

      Application folder: /Applications/Adobe Lightroom Classic
      Library Path: /Users/noltee/Pictures/Lightroom/Lightroom Catalog-v13-3.lrcat
      Settings Folder: /Users/noltee/Library/Application Support/Adobe/Lightroom

      Installed Plugins: 
      1) AdobeStock
      2) Aperture/iPhoto Importer Plug-in
      3) Flickr

      Config.lua flags: 


       

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      Eliza3714341552h7
      Participant
      October 21, 2026

      Regarding LrC, in Develop mode the adjustment sliders are not responding appropriately. They slide all the way to the left and are not easily sliding where we manually want them. You can enter a value but this is not efficient.

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      nik.m
      Community Manager
      nik.mCommunity Manager
      Community Manager
      October 21, 2026

      Hi, thanks for reaching out.

      Please go to the Help menu in Lightroom Classic, then System Info, and copy the text. You can share the info with us by either pasting it as a reply here or in a text file and sharing the file with us.

      You can try to reset the preferences of Lightroom using the steps mentioned here: https://adobe.ly/4eKRyAN


      Thanks,
      Nikunj

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      Eliza3714341552h7
      Participant
      October 21, 2026

      Lightroom Classic

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      Eliza3714341552h7
      Participant
      October 21, 2026

      Regarding LrC, in Develop mode the adjustment sliders are not responding appropriately. They slide all the way to the left and are not easily sliding where we manually want them. You can enter a value but this is not efficient.

       

      Translate
      jeyjey2707
      Participating Frequently
      October 20, 2026

      Any solution for Windows?

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      johnrellis
      johnrellis
      Legend
      October 21, 2026

      [View this post in your web browser. It contains formatting and images that don't appear in email.]

      ​@jeyjey2707 Any solution for Windows?

       

      The other reports about these symptoms have been for Mac, with a clean workaround identified (updating to the latest Mac OS). I haven’t seen any other reports about these symptoms occurring on Windows.

       

      I recommend you start a new thread, describing in detail what you’re seeing. It would be best if you could attach a short screen recording of the entire LR window showing the misbehavior:

       

      Windows Snipping Tool: https://www.descript.com/blog/article/how-to-screen-record-on-windows
       
      Mac Quicktime Player: https://support.apple.com/guide/quicktime-player/record-your-screen-qtp97b08e666/mac
       
      To keep the recording small, make the LR window as small as possible, and tell the tool to record just the window.

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      Community Expert
      AxelMattCommunity Expert
      Community Expert
      October 20, 2026

      This issue was reported by several users. Update MacOS to 26.7.1 (or later) should be solved the issue.

      See here:

       

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      My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 26H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 9 - PureRAW 6 - Topaz Photo AI
      Impressive_Twinkledd69
      Participant
      October 20, 2026

      LRC問題Lightroom Classic 15.6 – All sliders jump to far left when clicked; handle doesn't follow the mouse cursor
      Hi everyone,
      I'm having trouble controlling the sliders in Lightroom Classic. When I click on any slider, its value immediately jumps to the far left, and the slider handle does not stay at the position of the mouse cursor. This happens with all sliders in all panels. As a result, I can't set precise values, as shown in this video: https://youtube.com/shorts/xzsw9RcSnSA

      System information:
      - Lightroom Classic: 15.6
      - Mac: MacBook Pro 16-inch (Nov 2023)
      - Chip: Apple M3 Max - Memory: 48 GB
      - macOS: Tahoe 26.0.1
      - Input device: Mouse only (no trackpad or drawing tablet in use)

      What I observe:
      - After clicking a slider, the value jumps to the far left instead of staying where I clicked
      - The handle is not located under the mouse cursor
      - This happens with all sliders
      - The problem started about a month ago. It did not begin after an update to Lightroom or macOS, as I had not updated for some time before it started.

      What I've tried (none of these helped):
      - Tried several different mice, with the same result
      - Turned off "Use Graphics Processor" in Preferences > Performance
      - Reset Lightroom Classic preferences

      Video:https://youtube.com/shorts/xzsw9RcSnSA
      as anyone experienced this, and is there a fix or workaround? Thank you!

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