Autocompletion annoyance

When you type fast and you know what you type, and use "." instead of "->" for faster typing, autocompletion window "corrupts" the cursor position.

If I type something like: "member.setval", following happens:
"member.setv" appears. cursor is moved after ".". Completion menu appears. The text becomes:
"member->setv". Then my last 2 letters appears after the ->, and the final text becomes:
"member->alsetv"

This is annoying, I must always wait a second. The problem does bnot appear if I type "->" properly, or the real operator is "."