Artifacts left behind while using auto-complete with indent-guide

[hackaugusto]

Using auto-complete-mode with indent-guide-mode can produce artifacts on the end of the file, here is the minimum configuration to reproduce the problem:

(auto-complete-mode)
(indent-guide-mode)
(setq ac-auto-show-menu nil
      ac-auto-start 2)

To reproduce the problem:

Go to the end of any file, type two letters to trigger the auto-complete, the menu will be created and then hid, the result are ac-menu-height artifacts left behind.

I'm using emacs 24.4