Jenkins "Build Now" menu missing after upgrading from 1.638 to 2.1
<p>Using the script found here: <a href="https://wiki.jenkins-ci.org/display/JENKINS/Automated+Upgrade" rel="nofollow noreferrer">https://wiki.jenkins-ci.org/display/JENKINS/Automated+Upgrade</a>, I've upgrade my Jenkins on my local Windows 7 PC from 1.638 to 2.1. First thing I notice is these two menu only left with icon but no words. Any idea?</p>

<p><a href="https://i.stack.imgur.com/HWqZr.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HWqZr.png" alt="enter image description here"></a></p>