Shift-Alt-drag to copy stopped working. how do I fix it?

Apparently I accidentally changed a setting, and now shift-alt-drag to copy components doesn’t work.

how do I fix it?

apologies for a super basic question. I couldn’t find an answer with searching the forum because the terms are so common

Is it a Grasshopper menu under File → Preferences → Interface issue that the Shift+Alt got assigned to something else?

I don’t know, but it got fixed after a reinstall so maybe. thanks