Edit some other users collection that contains folders. Click on Select gives edit warning, when it should not.

Clicking "Select" for a composite sub asset in the body of the CB is the same as clicking on the folder in the TOC in the CB. Neither should give an edit warning even if the user is not he owner. Only edit for source assets shoddily give this warning to the non-owner.

This is because the link used to be edit, but Select is more correct. The change is a little risky at this point particularly since the CB will be going away.