I’ve noticed when I try to share a selected art board, it doesn’t share the one I had selected and the recipient easily gets lost and can’t find the correct art board. This seems like a bug.
I may suggest as well to put share options within the menu when you right click an art board as an action and maybe clip it as part of the sharing to the recipient so they have better context of what’s exactly is being shared to them.
Also being able to share a page would be helpful too. As well as sharing Sections.