When zooming into an image in library mode, the color changes suddenly and differs from all the consistent colours shown in develop mode or library mode (fit image). I just updated to LR10.1 and appreciated other fixed bugs. I am using an external BenQ display calibrated to AdobeRGB profile using xrite. The images have Adobe profiles (AdobeVivid) applied.
Updates to Lightroom Classic and the Lightroom Ecosystem products for Desktop, Mobile and Web were released today and contain a fix for this issue. Please refresh your Creative Cloud application and install your update when it becomes available. Thank you for your patience.