Hey David, this is just a tiny issue. The Mac version runs great and is by far the best pixel painting tool available (seriously :) but this has kind of bothered me for awhile... Is there a simple way to get the program to turn off the normal Mac mouse cursor when you are inside the Aseprite window? I've been using Cursorcerer to do this (if anybody else is similarily bothered) and it isn't a big deal. Just wondering :)
I've noticed a potentially related problem - apparently, if you're working in less than fullscreen mode and your cursor strays out of the window, it resets the cursor's location relative to ASEPRITE's window. This can be problematic on a wider screen, as it causes the cursor to jump clear out of the canvas; I've found it can be fixed by clicking out of the window and back in, but it's a minor irritation all the same.
I frequenly experience the pointer disappearing when using aseprite at any window size on multiple displays and switching between programs. I can usually get it back by clicking randomly, then using Undo to repair any damage I did to my drawing.