On the permissions page, the main button on the page is a standard button, when it should be a primary button.
There are three types of buttons supported in core and in the Seven style guide. Standard, primary, and danger.
It's important that the correct button types are used consistently throughout Drupal
Add the primary #button_type class to that form item, so it receives the correct class.
Beta phase evaluation
|Issue category||Feature because it does not meet usability standards|
|Issue priority||Not critical because it's a minor usability problem|
|Unfrozen changes||Unfrozen because it only changes markup|
|Prioritized changes||The main goal of this issue is usability|