I tried to reproduce the problem using the below simple example, but it worked out for me:
Can you please try if you can reproduce using the below code?
namespace qqq
{
void MyFun(int a, int b) {}
}
void func()
{
int arg1, arg2;
qqq::MyFun(1, 2);
}
I'm only able to reproduce the problem using member listboxes. (i.e. after a . or ->)