P: LrC 15.6: Sliders bouncing in the Develop module

I’m having the same issue, it was working ok yesterday and today the slider jumps to the far left as soon as I click it.

Also having this issue…  Once i click a slider and move it even the slightest amount, it jumps alllll the way to the left. 

Is this, perhaps, a Mac issue - looks like all the system-info dumps are Mac OS26?

Here’s Mine:

 

Lightroom Classic version: 15.6 [ 202609251514-f839cde9 ]
License: Creative Cloud
Language setting: en-GB
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: 16,384.0 MB
Dedicated GPU memory used by Lightroom: 1,786.9MB / 12,124.1MB (14%)
Real memory available to Lightroom: 16,384.0 MB
Real memory used by Lightroom: 1,580.2 MB (9.6%)
Virtual memory used by Lightroom: 437,435.6 MB
Memory cache size: 338.0MB
Internal Camera Raw version: 18.7 [ 2743 ]
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2
Camera Raw virtual memory: 1278MB / 8191MB (15%)
Camera Raw real memory: 1300MB / 16384MB (7%)

Cache1: 
Final1- RAM:378.0MB, VRAM:0.0MB, Oct-02-2026-DSC_2303-07-39.NEF
NT- RAM:378.0MB, VRAM:0.0MB, Combined:378.0MB

Cache2: 
m:338.0MB, n:352.1MB

U-main: 127.0MB

Standard Preview Size: 2560 pixels
Displays: 1) 2560x1440

Graphics Processor Info: 
Metal: Apple M2 Pro
Init State: GPU for Export supported by default
User Preference: Auto
Enable HDR in Library: OFF
GPU for Preview Generation: Auto (S5_11)

Application folder: /Applications/Adobe Lightroom Classic
Library Path: /Volumes/Mies/photo-archive/full-catalogue/100realpeople-v13-3.lrcat
Settings Folder: /Users/richardpartridge/Library/Application Support/Adobe/Lightroom

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

Config.lua flags: 

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

Seems like the same problem mentioned here 

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

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? 

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!

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

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