Inconsistent auto-completion of name scopes

For some reason, automatic completion of namespaces is not consistent with other name scopes, such as structs or enums. As you can see on the attached illustrations namespace auto-completion always adds scope resolution operator:: while for other entities it does not. This is too counter intuitive and causes issues when typing quickly: if you're used to adding :: manually, because it is required in case of structs and enums then switching to namespaces is such a pain because it leads to your hands automatically adding extra ::.