How to tell which version of a application is running

[Ralf Mardorf]

Unfortunately it's complex.

Assuming the local installed alternative version of "tracker" might
provide a lib with a wanted bug fix, it at least requires to run

  sudo ldconfig

Yes, you could provide several version of a lib parallel, but if the OP
wants to get rid of a bug, by a bug fix provided by a new lib, the
minimal requirement is to run at least one time ldconfig, after the lib
was installed. This might or might not be all that is needed, but this
at least is needed.