gdb does not stop at break point

I'm working on a medium size C++ project. If I set a breakpoint and start the debugger the debugger does not stop at the breakpoint but just runs through the code. But if I start gdb in a shell load the executable, set a breakpoint and start the executable in gdb then gdb stops at the breakpoint and I can do the usual gdb things like "next", "print" and so on.
Strangely, if I compile a "hello world" program, I can debug this in qtcreator with breakpoint, next etc.
Enclose please find the debugger log and the debugger commands
for the case where qtcreator/gdb does not stop at a breakpoint.
Any idea?