I have the following fiddle:
http://jsfiddle.net/q05n5v4c/2/
In Chrome, it renders just fine. The chevron is on the right side.
However, in Firefox, it
It seems like the property white-space is the cause of the issue. With the class btn this property is:
white-space
btn
white-space:nowrap
If you change that property works fine:
.btn { white-space:normal }
Check the Demo Fiddle