This extension for Firefox 57 barely works. Whereas previously LastPass would automatically fill in the fields and connect to most websites without user intervention, it now does that for none of them. At the very least, one has to scroll and find the appropriate site and click on it to enter the data fields. In most cases, a second click is required to send the data to the site. I have found at least one site where the new extension refuses to display or enter the user or password, requiring that it be done manually. After LastPass support's suggestion that I use the "save all entered data" for this site failed to work, it was suggested that I install Chrome and try the extension for it.

Firefox announced its new standards for FF57 extensions in February. LastPass did not release this extension until the day before FF 57's release and the extension it released is full of bugs. When I filed a support ticket as a premium user, LastPass acknowledged that they were aware of these issues. However, it was made clear that there is no target date to fix them. Despite the foregoing, no attempt was made to warn users about the lack of functionality of this extension. To say that LastPass has "dropped the ball" in its release of this extension is to put it mildly.