Errors on template with unsigned char

Hello,

I'm testing CLion, and I'm having troubles with errors check. I wrote some simple code to have a simple exemple:

#include <iostream>
#include <cstring>

class Table
{
public:
    Table(unsigned int size)
    {
        _tab = new char[size];
        memset(_tab, 0, size);
    }

    ~Table()
    {
        delete [] _tab;
    }

    template <typename T>
    T &at(unsigned int i)
    {
        T *t = static_cast<T *>(static_cast<void *>(_tab));
        return t[i];
    }

private:
    char *_tab;
};

typedef unsigned char myuchar;

int main() {
    Table tab(256);
    for (unsigned int i = 0; i < 256; ++i) {
        tab.at<unsigned char>(i) = static_cast<unsigned char>(i);
    }
    for (unsigned int i = 0; i < 256; ++i) {
        std::cout << static_cast<int>(tab.at<myuchar>(i)) << std::endl;
    }
    return 0;
}

The problem here is that CLion reports an error on tab.at<unsigned char>(i) saying that it is expecting a '(' in the template. If I typedef unsigned char as I did a few lines under, the error isn't here anymore (using tab.at<myuchar>(i))
Of course this code compiles with no warning, and works as expected.

Am I doing something wrong or is it a problem with CLion's error check?