Eyedropper showing wrong color but selecting correct one
This is in Photoshop version 25.12.0, on Windows 11.
When I use the eyedropper, the ring around the outside showing the color bing selected is wrong - it seems to have a yellow-green bias to it. But it's important to note that it does select the correct color - it's just that the preview ring is showing the wrong color. So this isn't the type of issue where I need to fuss with sampling all layers, etc - the tool is selecting colors just fine.
See the screencap below where I'm selecting from a pure white image, and the ring is yellow-greenish. The color selected is pure white, though. Sorry - the eyedropper icon disappeared when I took a screencap, but it shows up correctly.

