I have an M! MAX 16' 64B RAM and 4TB hard disk. I have had a recurring problem with typing, particularly online, where either it stops allowing spaces between words, and/or a rectangular box appears and then you can't type anything so I have to go to Notes to write something down and then paste it in. I had sent it back to Apple and they claimed it was fixed, but it wasn't. Has anyone else dealt with something like this, or do I just have a lemon?