Actions:

Create class:

class Demo{
 template <typename T, std::enable_if_t<std::is_enum_v<T>, bool> = true> 
void print();
}; 

move cursor to method print(), do mouse right click and select **Refactor > Add Definition Outside Class.

Observation: 
Definition is generated as follow: 

template<typename T, std::enable_if_t>
void Demo::print()
{ 
}

Expectation:

The ```<std::is_enum_v<T>, bool>``` must not be omitted in method definition

template<typename T, std::enable_if_t<std::is_enum_v<T>, bool>>
void Demo::print()
{ 
}