Electrum make quick fix very fast in a way they change how message is displayed in popup window, so it is not have direct clickable link to fake wallet but it looks like this :



And they do it same day when attack is started, so maybe they save few users who have problem with copy/paste. However the notice was officially published in Electrum site https://electrum.org/#download and version is still the same. So far there is no way to prevent that popup to be displayed if user is connect to fake server, only way is to ignore it and close that window.