1)
Quote:
Ideally, (IMO) auto-complete should only be offered at the end of a word, or after a .
By design auto-complete reads from last to cursor position and appends there. It does not intend to read what (or if) is after the cursors. Well .. I think you should only use autocomplete where it make sense to use it.
2)
If there are more alternatives possible it switches between them as you press TAB again. When first BETA was out I posted this: http://www.webyog.com/forums/index.php?showtopic=1944 . That is how it is supposed to work.