Take a look at https://canny.io/register and https://canny.io/somepagethatllthrowa404 - as you'll see in the navbar, the login button splits to 2 lines.
I am able to reproduce the issue on Firefox. Thanks so much for reporting, we'll have a fix out soon.
Hey Tony, I'm unable to reproduce this issue in Chrome / OS X. Which browser are you using??
@Andrew Rasmussen: I'm using Mozilla Firefox on Windows 10 Home. I've also had the same bug on Google Chrome on the same OS.