Obviously proofing from sRGB to sRGB doesn't make any sense. I have done it only to demonstrate that there is something wrong with the current implementation when a GPU is used. If I can't trust a conversion that is 1:1 there are probably issues with any other profile conversion, so this bug should be addressed by Adobe.   ... View more

I can confirm the issue is currently present on a brand new MacBook Pro M4 Pro with MacOs Sequoia 15.3.1 and Photoshop 2025 v26.4.1 Using the GPU and soft proofing from sRGB to sRGB colours changes. Same beavhiour is present in Save for Web (legacy version). Disabling the GPU soft proof is ok. The issue can be seen on internal monitor with default Apple XDR profile and on an external Eizo calibrated monitor.     ... View more