Sometimes using manipulator handles to scale by single axis not possible

This happens every now and then, I have not found a sure way to reproduce it but usually you just need to play around a while for it to happen.

The issue is that when dragging a manipulator handle to scale along a single axis, it actually scales uniformly along all 3 axises. 

Restarting Studio will remove the issue and scaling will work normally.

Attaching a project where it happens and an animated gif showing the issue.