You may want to change the uitable property of 'ColumnEditable' from true to false. When it is true, you can edit, but can't copy the whole table to clipboard (can only copy one cell at a time). When it is false, you can't edit, but can copy the talbe. I usually add a toggle button beside the uitable, so that users can switch between copy mode and edit mode. I'm not sure if this is the problem you encountered.