:EclimHelp returns the error 'Sorry no eclim help for index'

[eugenr]

But I managed to find that it works if I enter the command as:
:EclimHelp index.html

In my vim's :help you can see there is the html suffix added to the tags:

LOCAL ADDITIONS:                *local-additions*
|404.html|
|changes.html|
|cheatsheet.html|
|contribute.html|
|eclimd.html|
|faq.html|
|features.html|
|gettinghelp.html|
|gettingstarted.html|
|index.html|
|install.html|
|relatedprojects.html|

...

Since I got it in 2.5.0, I git pull the last changes and rebuild, but it still happens in my current version:

eclim   2.5.0.21-gca00af8
eclipse 4.5.2

During the rebuild, I did do ant vimdocs.
I have:

Debian 8.3 (jessie)
python-sphinx 1.3.4-1~bpo8+1
python-docutils 0.12+dfsg-1
Python 2.7.9