Yes, I too am having the Chrome Externsion problem but not Firefox.
READ ON for a possible bypass/resolution [?]
I did open a problem (premium support) and haven't gotten a non-automated response in 36 hours. I then searched the forums support site and saw there were 207 posts. Yours was the most recent.
BTW, I use 2FA and though that is working in Firefox, my auth app does not get pinged by the current Chrome SNAFU.
I also used a Chrome SETTINGS RESET to default option which did not result in any difference.
BUT I may have bypassed the problem:
Via your regular Chrome browser URL, click on:https://lastpass.com/?&ac=1&fromwebsite ... ult=1&nk=1
and signon via that web page.
THEN use the toolbar red ICON and signon (again).