The debugger displays the Stopped In Class With Tracing Disabled dialog box if a breakpoint is set in a class for which tracing is disabled and the Warn If Break In Class With Tracing Disabled option on the Debug page of the Project Properties dialog box is on.
Setting a breakpoint in a class in the Classes with tracing disabled view overrides tracing settings; you will stop in that class because you explicitly instructed the debugger to go to that point. In this situation, stepping after the breakpoint is hit will cause the debugger to go out of that class. Turn Smart Stop off, then use the stepping icons to step into that class.
Check this option if you want this dialog to be displayed each time the debugger hits a breakpoint in a class with tracing disabled. By default this option is on.
See also