Hi there, I think this is a bug we have been working on. Let me poke @martinb to confirm. Part of the issue is the perspective shift, what version of Mocha are you on? Mocha VR is pretty out of date, and the latest Mocha Pro should have addressed some of the perspective shift issues.
Thanks for email through the footage. I’ll take a look on the support case you emailed us. If we figure out a solution with you on email, I’ll respond here as well afterwards.