Yes, it seems to flit and stutter and sometimes words jump around too!
I now tend to use the post preview more so that I can see my whole message without the need to scroll. The trick for me is then remembering where the typos are and if they are glaring, I then still have the same problem as I try to put them right.
I often use the preview message, particularly if my post or message is a long one. I'm terrible for typos and the silly auto correct. I tend to type quickly on my tablet, and sometimes miss the letters and add a v,c, or b when using the space bar. It is a useful tool.