Today Firefox container is suddenly causing significant problems. Container, starting this morning, is preventing me from posting articles directly from a news-site, like the WSJ. This is after an update to 90.0.2 (64-bit). In addition FireFox has also become unstable after I log into FB. The instability leads to FrieFox not responding and a hang serious enough to require a force quit of FF followed by a complete restart of my Mac!l