Can not step into functions on Symbian

I attached a small example to show the bug. It's based on the generated Qt GUI app. I defined the global function someCall() in front of main and call it from main. someCall() just calls qDebug() and returns.

When I try to step into someCall() the debugger just runs to the next line of main. The output of qDebug() shows up, so the function is executed. A breakpoint inside someCall() is hit, too.

I attached the output of the debugger.