Comment by afandian

Arguably the feedback via the cursor change is feedback to help you learn, like the icons that appear in the close / minimise / zoom, or stickers on the keys of a musical instrument. You pretty quickly learn which one is which, or you can't use them effectively. At some point you'd hope that common actions become muscle memory.

So if it was something that was learned whilst using the previous version, and worked, I'd argue it wasn't 'erratic'.