Cursor jump on when click an object (when turn on cursor and "drag to rotate" mode)

Same happens for me, same book, Mac 13 Retina Yosemite, early 2015 version.

Hello,

I am a Mac user too (MacBook 13’’ Retina ElCapitan (2016)) and encountered the same issue too.
But when I click on gui elements (e.g. Lemur gui) the the cursor behaves as expected.

Regards,
Harry