Firefox latest update 65 disabled mouse and keyboard selection in our application. It is causing us to tell users to not use Firefox, all other browser work. You can log sign up for a trial here: https://lectoraonline.com Try to edit text with Firefox 65, and 64 was fine. We love Firefox and it's killing us to recommend people use other browsers. Our biggest customer uses Firefox exclusively, luckily they are on a private build but this is getting us very worried about if they decide to upgrade. Meanwhile we are telling people to use another browser, even recommending IE and Edge over Firefox. That's scary. It very well may be we are doing something incorrectly but we cannot figure it out, and it works in Chrome, Safari, IE, Edge, Opera, etc.