QTCreator 17 run terminal cannot handle key input at Linux anymore

It seems that the terminal as indicated at projects->run->Run is not a full interactive terminal anymore. (Linux only)

Eg isatty(STDIN_FILENO))  returns false. Eg a canonical getch() like function like:

int getch()
{
    struct termios oldt, newt;
    tcgetattr( STDIN_FILENO, &oldt );
    newt          = oldt;
    newt.c_lflag &= ~ ICANON;           // not buffered
    newt.c_lflag &= ~ ECHO ;            // no echo
    tcsetattr( STDIN_FILENO, TCSANOW, &newt );      // set
    int ch            = getchar();
    tcsetattr( STDIN_FILENO, TCSANOW, &oldt );      // restore
    return ch;
}

Does not work anymore and always immediately returns -1. Worked fine with QtCreators before 17.0