The bug where during gameplay a controller will both interact with the game and the ESO launcher in the background is still happening.
During the middle of content you can have multiple windows pop up such as the ESO forums or ESO stores website because you pressed the "A" button (Xbox, X playstation) and it clicks on the launchers buttons.
This was reported back when the new launcher was in Beta and has now carried over to live. Sometimes you can have so many windows opened in the background that it starts to degrade performance and overheat your cpu. That is of course if the windows dont get put over the game and then cause you to die in game because you cant see.
Happens mostly when alt-tabbing back and or during the beginning of a gaming session. As of right now I am having to close out of the launcher after starting, but the problem of the controller interacting with multiple program id instances is still there.
A bit concerning that user input is not locked to the specific intended instance...should be a security feature...would be a bad thing if say you are typing your password in one window...and its being recorded in another.