This extension finds bad motion tracking tracks.
The way it works is that it highlights tracks that move differently from the others.
Basically, if all tracks move to the right, except one that moves to the left, then the single track moving to the left is likely wrong and should be evaluated by a human.
Compared to the Refine tracking solution add-on:
Minor bug fixes.
Tests were added for the badness scoring.
This extension does not require special permissions.