Replication Steps:

Go to "Hosts" -> "Provisioning Templates" -> "New Template"

1) Name: testtemplate In template editor write " Test code" in Audit Comment : "testing"

2) Click on tab "Type" click on "snippet"
3) click "Submit"

Current Behaviour: UI system responds with text "can't be blank"

Desired Behaviour: A new template should be created.

Notes:
(1) The desired behaviour is achievable is browser google-chrome is used .
(2) <tbrisker> on #theforeman comments below:
"rmallah: i can confirm this occurs only in FF when creating a template using the two-pane layout.
if using the full scrren (open the new link in a new tab) it works fine, also for chrome."