This is an internal site so I can't share the address but the behaviour is that when typing into a text input randomly and intermittently characters are dropped. This doesn't on other browsers or applications on the PC, just in Firefox. The internal site is a very complex application so it could be related to something that is happening in the application; however, it works fine in other browsers. One portion of the application has some compatibility issues and this is forcing the users to work in FF. Windows 10, Quantum 63.0.1 I've tried disabling hardware acceleration and accessibility features. I've also tried safe mode and refreshing firefox. I've also tried using the 32-bit version. None of these have any change to the problem.