Version 9.0 has a bug using Sony cameras (A7III at least): while scrolling images with embedded previews, you'll get a glitch where the right border of the image looks "multicolored". While scrolling the colored border is thicker, while it settles on few pixels when you stop scrolling. Nothing that compromises the workflow, but still annoying. See image.
Images with 1:1 previews don't have this issue, as well as images that have been edited.
Turning off the GPU doesn't make a difference. I have to note that it only happens to one long side (either right or bottom).
As said, generating a 1:1 preview solves the issue (though I work with smart previews):
Here is my system information:
Lightroom Classic version: 9.0 Operating system: Windows 10 - Business Edition Version: 10.0.17763 System architecture: x64 Logical processor count: 8 Processor speed: 3.3 GHz Built-in memory: 16341.9 MB Internal Camera Raw version: 12.0 [ 321 ] Displays: 1) 1920x1080 Graphics Processor Info:
Todd_Shaner confirmed the issue using my ARW files. The issue, he explained, is due the fact that Sony cameras don't embedded a full size JPEG preview as davidg36166309 explained (thread here: https://community.adobe.com/t5/lightroom-classic/new-releases-new-bugs-embedded-preview-glitch/m-p/1...😞 "I extracted the preview from one of the ARW files and it is 1660x1080 with the edge artifact not visible. Because that is less than 50% of the raw image size LR should have built Standard size previews on Import as explained here. [...] The edge artifacts shouldn't be happening even with LR not creating Standard size previews on Import. The lower resolution (i.e. blurry) image is due to the lower resolution embedded JPEG preview size. Again, LR should be detecting that you are trying to view the Embedded Preview image at greater than 1:1 Zoom view and "automatically create a Standard size or even 1:1 Preview." [...].