Steps to reproduce:
- create a new C++ Application
- add a new main C++ file to the sources
- insert the following code in the main C++ file:

#include <stdlib.h>

//
class A{
    int a;
};
// 
class B: public A{
    float b;
};
//
class C{
    int* pI;
    B* pB;
public:
    C(){
        pI = new int(10);
        pB = new B();
    }
};
//
int main(int argc, char** argv) {

    C* pC = new C();

    C* cc[4];

    for(int i=0; i<4; i++){
        cc[i] = new C();
    }
    
    return (EXIT_SUCCESS);
}

- build the project
- do step into project, works fine
- finish debug session
- set a breakpoint at the first executable line in main function ( C* pC = new C(); )
- run debugger
Result: Debugger does not start correctly. Only "Finish" debugger button is available. Debugger does not navigate to
source code. LV shows "There is no current thread to display the variables for".
 See also issue #119061