Further to support case 02283766 (Keep action buttons in the same locations on different screens)
I received a reply, but it wasn't relevant. The problem is not the wait every time something is clicked in webmail. The problem is that the Yahoo Mail button "Move" actually moves slightly to the right as a mail message opens, which means that clicking the button too soon means that the button "Archive" is clicked, which appears in exactly the same location as the button "Move" had appeared milliseconds before.
My suggestion is to keep the action buttons (that appear on more than one of the Yahoo Mail screens) in exactly the same location on the different Yahoo Mail screens,