This is a macOS Sonoma bug. I've experienced this in Firefox since day 1 using my iMac M3 from early November on 2 different macOS Sonoma versions. I will be updating to a third version (14.2) later today and will report if it fixes it, but I'm gla...
I just found the exact way to replicate this issue BTW. It's very simple:1) Launch Firefox and go to any website that has links or elements that you can test the glitch upon.2) Hit CMD-N or go to the menu: FILE > NEW WINDOW.3) In this new window, lo...
This happens to me under Firefox v120.0 and macOS Sonoma 14.1.1 after a few hours to a full day of work. It seems like a memory leak or something related to using Firefox over the course of a few hours (EDIT: it's not). Rebooting fixes the issue, b...