Problem about eyedroper

[Sasikanok5C56]

When I group objects and want to pick up color, but that's wrong color.

It's no problem if I ungroup object

I don't know why. It hasn't happen before.

[Met1]

It doesn't appear to be, but is it a gradient? Try shift-clicking instead...

[summert24526103]

Just add that color to your swatches panel and then pull from there.

[Dan Rodney]

Maybe that other object is that gray color but has a blend mode applied (like Multiply) which changes its appearance. Your settings are not copying Transparency which would include that.