Hi Raam,
in this case I think you best bet is to debug what is happening when you click on the "Clear interaction" button. I'd suggest setting a break point in the DO_HANDLE_EVENT method of th standard component and your enhanced component. If everything works as expected the DO_HANDLE_EVENT of class CL_CRMCMP_I_HIDDENVIEW_IMPL should call the ON_FORWARDCALL method.
If this part works you can also try to debug the method ON_INTERACTION_END_REQUEST in CL_CRM_IC_INTERACTION_MGR_UIU.
Christian