Inspection incorrectly triggers "inaccessible private member" warning

Hello. The following code compiles without errors and warnings but IDE underlines a piece of code and says that "private 'Class1::k' is inaccessible". Am I missing something or is this a bug?

#include <iostream>

template<class T>
class Class1 {
    int k = 1;
    template<class> friend class Class2;
};

template<class T>
class Class2 {
public:
    void function() {
        std::cout << element.k;
    }

private:
    Class1<T> element;
};

int main() {
    Class2<int>().function();
    return 0;
}