A Job Template can specify environment variables. These variables are propagated to jobs and are displayed in the "Environment Variables" section of the job's properties.
The values of such environment variables cannot be changed in the job configuration. They are greyed out in the list of environment variables.
It is possible to click the "encrypt" icon to encrypt the value. With the encryption the value will be changed which is undesired behavior.
Desired Behaviour
For greyed out values of environment variables in a job the icon to encrypt the value should not be made available.
Delimitation
A Job Template can hold encrypted values for environment variables that will be propagated to related jobs.
Fix
Minor