'jira.issue.editable=false' property does not impede editing of issues

Summary

In Service Desk and Software projects on JIRA 7.0, adding the jira.issue.editable=false property to a step in the workflow only removes the "Edit" button, but allows for inline-editing of any field.

Expected Behavior

The property should impede any editing from happening on issues from projects of any type.

Actual Behavior

Inline-editing is allowed for any field on Software and Service Desk projects.

Steps to Reproduce

1. Create a Software or Service Desk project;
2. Add the jira.issue.editable=false property to any step of the workflow used by that project, then publish the draft;
3. Create an issue under that project and transition it to the status where that property was added;
4. Notice it's possible to inline-edit any field;

Workaround

Use the jira.permission.edit.denied property (with no value) instead. Set the value to true if no value doesn't work.