I have multiple projects loaded in the same Qt Creator session. Two of those projects have C++ classes with the same class names and file names. Both are concrete implementations of a common virtual base class.

My simplified session looks like:

Project1
    myclass.h
    myclass.cpp
Project2
    myclass.h
    myclass.cpp

Pressing F2 or Shift+F2 to switch between the function declaration and definitions work in all instances except for Project2/myclass.h. Instead of jumping to Project2/myclass.cpp Qt Creator jumps to the function in Project1/myclass.cpp.