Description of problem:
I´ve created a custom job template where I cloned the Package Action - SSH Default template to my own custom template.

As description I have MyJob %{label} and I have a input field named label in the template which I fill in with a descriptive label when I run the job.

The variable label is however not rendered when the job is invoked and all jobs are just called "MyJob ".

If I do a foreman-tail when running the job it looks like the values are passed correctly.

==> /var/log/foreman/production.log <==
2017-01-25 13:52:20 [app] [I] Started POST "/job_invocations" for 172.20.123.105 at 2017-01-25 13:52:20 +0100
2017-01-25 13:52:20 [app] [I] Processing by JobInvocationsController#create as HTML
2017-01-25 13:52:20 [app] [I]   Parameters: {"utf8"=>"✓", "authenticity_token"=>"5rhjFz52yxya/eRFFaeaUhunevNauPi8pmYxCkP9gSI=", "job_invocation"=>{"job_category"=>"Packages", "providers"=>{"SSH"=>{"job_template_id"=>"247", "job_templates"=>{"93"=>{"input_values"=>"[FILTERED]", "effective_user"=>""}, "247"=>{"input_values"=>"[FILTERED]"}}}}, "description"=>"MyJob example-label", "description_override"=>"MyJob %{label}", "description_format"=>"MyJob %{label}", <snip>}

The built in templates works fine however and the variables are rendered correctly in Description format when invoked.

Version-Release number of selected component (if applicable):
Satellite 6.2.6

How reproducible:
Always

Steps to Reproduce:
1. Copy an existing template
2. Add a new input field
3. Add the input field name in Description format as: %{inputfield}

Actual results:
Description format doesn´t render variables

Expected results:
Variables should be rendered

Additional info: