Gaussian Blur Tracking - Doesn't work

There's a really annoying bug in Premiere Pro - that doesn't allow me to track when blurring footage. 

I create a mask and when I click on the track button - nothing seem to happen and no progress is going forward. 

I'm afraid it's not really something that can be fixed by clearing cache or playing with the settings, it's a bug that I've encountered a few times and definitely requires more advanced fixing. 

A picture is attached below: