EPM Extension mapping error does not refresh list

This relates to older versions also. When there is a error rebuilding the files and an error box pops up, whatever you select to dismiss the box does not refresh the list. If you refresh the page in your browser it shows all checked lines as being rebuilt, but I am getting suspicious some may of not been. For example if you have a line that does not have a MAC address in it because the hotdesk phone is logged out, it will pop the warning that the phone must support hotdesking, but selecting OK will not refresh the list and all the lines continue to be checked and show yellow. If you then refresh the page in your browser they then all show green.