no candidates presented in web-mode

[sunilw]

Using the latest versions of web-mode and auto-complete from git:
No candidates are presented for selection in web-mode.

Here are examples of files that I'm editing:
https://gist.github.com/sunilw/8d8e209ff01b7d0603ca
https://gist.github.com/sunilw/ba9453c5a089288bb9bf

I definately have auto-complete-mode loaded: I can see AC in the modeline.

My config for auto-complete looks like this:
https://gist.github.com/sunilw/32720ffc0eedc81c99d6

[syohex]

I suppose this is web-mode issue.

ac-sources which is a variable for saving completion sources becomes nil
when I use web-mode for a while. If this variable is nil, no candidates are presented.

[sunilw]

How can I create more data on this issue?

[syohex]

(defun my-web-mode-hook ()
  (setq orig-ac-sources (copy-list ac-sources)))
(add-hook 'web-mode-hook 'my-web-mode-hook)

Add above setting and open HTML file with web-mode.
ac-sources is nil after saving buffer however ac-sources is not nil
at first. You can see original value via orig-ac-sources.