Hi, Firefox desktop UI (v 84.0) is showing black boxes in some portions of the screen (screenshots attached). This seems to go away once I switch tabs or resize the window. This is happening for any website and is pretty random. It does looks to me some UI glitch. I have tried the below to resolve on my end without success: 1. Upgrading to the latest release 84.0.1. Downgrading to 83.0 didn't help either 2. Tried checking safe mode and browser refresh and also with and without add-ons enabled 3. Tried tweaking the config gfx.webrender.enabled = true I am using the x64 version on an updated Windows 10 system with Nvidia 940MX card. Appreciate your help in resolving this.