Problem: When you start a debug session in a perspective other than the Debug perspective, then you press F5 to refresh the views, instead of refreshing the views in that perspective, in the Debug view, the debugger does a Step Into.
Cause: If you start a debug session while in a perspective other than the Debug perspective, Rational® Developer for System z® might add the "Debug" view to that perspective. After this, the debug shortcuts are added to all the views. In some cases (like F5), it overrides existing shortcuts.