I’ll second that even in Sequoia now you mention it.

If I’m in a full screen application and I Exposé, the main desktop apps are in view despite the full screen application being highlighted. Swiping left or right between desktops updates something that corrects this, but definitely doesn’t feel like intended behavior.

I have dock magnification on and in certain situations, the cursor will leave the dock but the magnification effect remains where it last saw the cursor.