The "revert" function in the provisioning templates seems not to be fully working. You can click the "Revert" Button, it asks "Are you sure you would like to revert the Template?". After clicking the "OK" Button you end up in an editor window of the actual (not reverted) version of the Template. You cannot revert to an old(er) version.

How to reprduce:
1.) Go To: Hosts -> Provisioning Templates -> Choose a template from list oder create a new one -> Create/Update content in the editor -> Hit the "Submit" Button to create a new version of the file
2.) Go To (within the provisioning template): History -> Choose a version to revert to and klick on the revert button -> Klick "OK" when it asks "Are you sure you would like to revert the Template?" -> The editor window opens with the actual (not the reverted) version of the template
3.) Optional: Edit the content in editor window -> Klick "Submit" -> History -> You will find a new version added to the history section

In step 2 I would expect to see and edit the content of the template I reverted to.