Just tried to login on meteor.com but clicking on the top-right “SIGN IN” rectangle nothing happens.
I had to run
$('#login-sign-in-link').click()
from the browser’s console to get the usual accounts-ui form to pop up.
Anyone else experiencing this problem?
It used to work one month ago when I last used it… 
Just updated, chrome 44.0.2403.89 stable x86_64 Linux. Same issue.
So I have done some tinkering and it seems to be because chrome no longer considers content in an ::after as part of the same region as an anchor tag. The Meteor login is not actually a styled accounts-ui, they hid the origional link with css and appended the Sign In ▾ as ::after css content. Not sure if this is a bug or by design.
We just pushed a fix that no longer uses ::after for the login button. Hopefully on Monday we can make a better fix that keeps the original appearance.