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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

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      owenl34864755
      Participant
      October 2, 2026

      I have the same issue. Hope it gets fixed soon. 

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        dj_paige
        dj_paige
        Legend
        October 2, 2026

        Seems like the same problem mentioned here 

         

        One person says that reverting to Lightroom Classic 15.1 solved the problem.

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        anne_guillard
        Participant
        October 2, 2026

        Le curseur n’est plus fonctionnel . Lorsque je clique sur la barre (peu importe la fonction) il va automatiquement me mettre l’image à 0 je dois tapper les chiffres à la main. 
        Que faire??
        De plus une fois sur 2 mes masques ne s’appliquent pas quand je synchronise (même en ayant bien cocher la case )

        Qu’en pensez vous? 

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          richardp85860634
          Participating Frequently
          October 2, 2026

          Is anyone able to report this as a Bug please. I have tried two machines and two different browsers and it just gives me a blank page after I click ‘continue’ (see below) Thanks!

           

           

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            owenl34864755
            Participant
            October 2, 2026

            Where can you even find this page I’m trying to? it just brings me back to the forum every time

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            stephanieh54345612Author
            Participant
            October 2, 2026

            It was resolved with going back to the previous version. The most recent update had a bug.

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            richardp85860634
            Participating Frequently
            October 2, 2026

            Not really a resolution - a temporary fix. Adobe need to squash the bug and update rather than making us regress our versions. IMHO!

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            fantastic_Zephyr2253
            Participant
            October 2, 2026

            hi is there any solution? it happened to me also. trackpad also same

             

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            richardp85860634
            Participating Frequently
            October 1, 2026

            This is happening to me too right after upgrade to latest version. I have swapped mouse ( to a wired one) and keyboard ( to a wired one) . I have reset preferences, I have turned off GPU support all to no avail:

            Lightroom Classic 15.6 release


            Mac mini M2Pro 16GB : Tahoe 26.0 (25A354)

            As an aside - I tried to create this as a bug - but after I enter a description and then that there isn’t a similar bug: ‘None of these match your issue’, press continue and get a blank screen - on both Chrome + Safari… come on guys - this is pretty poor ….

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            sunshinetina
            Participant
            October 1, 2026

            This is happening to me, I just updated and now sliders bouncing around when I try to reduce or increase exposure. It's a nightmare, are they going to fix it. 

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              dsmithimages
              Participant
              October 1, 2026

              This is happening to me as well. I’m editing on a MacBook Pro. The sliders will automatically got to the extreme on either side depending on if you click left or right. I’ve tried with the wireless trackpad, the trackpad being wired, and the trackpad on the actual MacBook. I’ve also tried with catalogs on an external SD and a catalog on my computer’s internal storage. The error started happening after the update to 15.6. 

               

              System Info: 

              Lightroom Classic version: 15.6 [ 202609251514-f839cde9 ]
              License: Creative Cloud
              Language setting: en-US
              Operating system: Mac OS 26
              Version: 26.3.0 [25D125]
              Application architecture: arm64
              Logical processor count: 10
              Processor speed: NA
              SqLite Version: 3.45.1
              Adobe GSDK Version: 1.4.0.213

              Power Source: Plugged In, 100%
              Built-in memory: 32,768.0 MB
              Dedicated GPU memory used by Lightroom: 3,790.0MB / 25,559.0MB (14%)
              Real memory available to Lightroom: 32,768.0 MB
              Real memory used by Lightroom: 3,423.6 MB (10.4%)
              Virtual memory used by Lightroom: 428,185.5 MB
              Memory cache size: 4.6MB
              Internal Camera Raw version: 18.7 [ 2743 ]
              Maximum thread count used by Camera Raw: 5
              Camera Raw SIMD optimization: SSE2
              Camera Raw virtual memory: 356MB / 16383MB (2%)
              Camera Raw real memory: 440MB / 32768MB (1%)

              Cache1: 
              Final1- RAM:352.0MB, VRAM:2,972.0MB, untitled033.RAF
              NT- RAM:352.0MB, VRAM:2,972.0MB, Combined:3,324.0MB

              Cache2: 
              m:4.6MB, n:317.5MB

              U-main: 105.0MB

              Standard Preview Size: 3456 pixels
              Displays: 1) 3456x2234

              Graphics Processor Info: 
              Metal: Apple M1 Max
              Init State: GPU for Export supported by default
              User Preference: Auto
              Enable HDR in Library: OFF
              GPU for Preview Generation: Auto (S5_24)

              Application folder: /Applications/Adobe Lightroom Classic
              Library Path: /Volumes/T7/PROJECT DIRECTORY/2026/005-PLACES/093026-New York, NY/CATALOG/093026-New York, NY/093026-New York, NY.lrcat
              Settings Folder: /Users/davidsmith/Library/Application Support/Adobe/Lightroom

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

              Config.lua flags: 

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                jrsforums
                Inspiring
                October 1, 2026

                Just to add a data point.  I am using 15.6 on Win11.  Sliders work fine with Wacom tablet and Logitech mouse (Unifying USB connector).  

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