[Dev-C++] complier bug

[<coo...@gm...>]

hello everybody, maybe I've found a bug in Dev-Cpp 4.9.9.2

I've created a new C++ project, and added a header file in the
project, then include the header file in the main cpp file. e.g:

//test.h
....

//main.cpp
#include "test.h"
int main(){return 0;}

the problem is: once main.cpp has been complied and remain unmodified.
The complier won't re-complied it even if I modify the file "test.h"
---- it SHOULD compile it!

maybe it's a bug or just a wrong setting in my computer, so guys,
please do the same thing and see if it'll happen in your computers.
THX!

wl