I generally like LastPass as a service, and have good experiences with their Chrome extension and command line client, but this Firefox addon is clearly not a first-class citizen for them. It is poorly and inconsistently maintained, and regularly breaks Firefox's fundamental purpose...to be a web browser...on multiple platforms; I can attest to Pop!_OS and Windows 10 personally, but while troubleshooting this problem, have run across reports from a variety of other OS flavors. When the LastPass extension is enabled, only Mozilla sites connect and render. Any other web page or remote service the browser attempts to connect with, including lastpass.com itself, just sits there animating the bouncing ball in the browser tab, but otherwise does nothing. The operation also never times out or throws an error. Additionally, it renders other extensions inaccessible/non-functional via their quick access icons. As another reviewer pointed out, the only workaround is to fully uninstall and reinstall the extension (and restart Firefox afterwards) anytime Firefox updates or has a config change. This is not acceptable for a paid service that promotes its browser extension as the primary interface.