Debugging a program and had something really strange happen to me

I was stepping through the code and found my problem. When I hit F3 to end
the debugging, it instead did a "resume", stopping on a later break point.
I hit F3 again and it did the same thing. When I tried to do a SysReq 2 to
end it, it told me it couldn't (forget the exact message). This was a
"production support" profile and not my normal developer profile. Since my
developer profile works correctly, what option have they set on the
production support profile that prevents this from working and why would you
ever want an F3 in a debugging session to resume instead of exiting?