lldb does not start console (qtcreator_process_stub) for IO interaction

Steps to reproduce:

• create simple Qt Console application from template
• select Qt5 kit (I've used Qt5.1.0rc/clang/lldb engine)
• insert some statements to the main() to ask for input from user (see example main.cpp)
• start debugging

Current result:

• qtcreator_process_stub is not started
• all I/O goes into the Application Output (which is not usable for input)

Expected result:

• qtcreator_process_stub (or similar) is used to do input as well (works fine when using Run instead of Debug)