key pop-up jumps all over the place when typing quickly

```
Looks kinda weird when typing "A" "Space" "A" "Space" "A" "Space" "A" "Space" 
"A" "Space" for example.
The key pop-up slides in between them instead of just showing above the pressed 
key.
Galaxy Note 4, Samsung stock firmware 4.4.4
```

Original issue reported on code.google.com by `verstege...@gmail.com` on 2 Jan 2015 at 9:16
