This is so bizarre for me because it's like a flashback. I was seeing errors exactly like this in Firefox years ago, around 4-5 years or more I'd say. This was

This is so bizarre for me because it's like a flashback. I was seeing errors exactly like this in Firefox years ago, around 4-5 years or more I'd say. This was on windows 7 64bit with a probably outdated install because my favorite extension for vertical tab tree was always behind on version support. This error would manifest when I had many tabs open for a long time. I'd often keep sessions of hundreds of tabs open for weeks. The errors would start to appear and gradually get worse until I had to force crash ffx and restart (and recover my tabs!) Not really actionable or reoro, but anecdotally maybe it helps to hear this isn't strictly new.