Could you check whether you have set any permissions for the built-in role - "everyone". All permissions that are set over this role are inherited by the other roles( an exception is "administrators" and all built-in roles).
It looks like you have applied some rights over everyone role and your custom role called Editor inherits the permissions which are set on a low level.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items.