Way to replicate it:
- Create a new topic and add a Poll to it.
- Edit the topic and make it sticky (without the poll).
- Edit the topic again and try to add the Poll.
Also, if you need an example of how a standard v4.9.4 forum looks like, please have a look at mine.
Do you see something out of the ordinary? (like every closed topic appears on top of other normal topics regardless of the post date!).
Basically a closed topic acts like a sticky one...
Probably this is the change that broke it: http://codologic.com/forum/index.php?u=/topic/12793/sticky-topics-don-t-remain-on-top-of-the-main-page/1#post-24303
We really need a new version, as there are too many bugs...