Summary : UI Freeze issue in Firefox version greater than 100 Behaviour: Screen becomes unresponsive We have an angular 13 web application running in kiosk mode in Firefox using command This UI unresponsive when no interaction with the screen for long hrs and sometime it is crashing while it is getting used. We are seeing this issue in all the Firefox versions deployed in our systems that are all version 100 or above. We do not see this issue in the same base device OS and resources with version 100 and below.System Details : Ubuntu 18.04.4 LTS, aarch64 GNU/Linux Hardware: Jetson Xavier NX RAM : 8 GB CPU : 6 cores  The way we solve this issue today is by relaunching Firefox. Just by closing and opening the browser makes the UI is responsive again.