Contact Create API Check Permissions Parameter Not Passed?

Sorry if this seems scattered...

I am doing this in a custom extension with an anonymous user. I am getting this issue when doing contact create on an existing contact that I am updating.

When creating the contact I have:
dupe_check : 1
check_permission: false

This works fine and duplicates are checked. I'm pretty sure the only reason it is working is because the $contactID is null.

HOWEVER
When updating an existing contact and passing the id it will fail with the error "Permission denied to modify contact record". I have found that the parameter 'check_permissions' value is not being passed to contact.php, while 'check_permission' is.

The API is actually checking for the parameter 'check_permissions'. Even if I set my parameter to 'check_permissions' the value is always TRUE in the PHP.

If I change the !empty($params['check_permissions'] to !empty($params['check_permission'] then it will get the value that I pass. I noticed that this was later added for dedupe.

Is there any reason that check_permissions for create, delete, etc cannot be set as a parameter?