"Follow symbol under cursor" sometimes follows to the symbol usage instead of definition

I have a fairly large CMake-based project that uses Boost and quite a few other libraries. Sometimes, when I follow a symbol under cursor (a function call), QtCreator switches to a random other place in the code base (in a different module altogether) where that symbol is used. If I follow the symbol from there, then I might get to the symbol definition.

For example, if I have the cursor at a `boost::intrusive::list<>::splice()` function call and press Ctrl+F12 to follow to its definition, QtCreator actually follows to an unrelated place where the same function (of a different specialization of `boost::intrusive::list<>`) is called. If I press Ctrl+F12 on that call, I then get to the function definition.

This does not happen specifically with Boost functions, it can happen with any same-named functions, even from completely different classes.

My project is not open source, and I can't publish it. I'm also unable to create a small project that reproduces the issue.