I encountered issues with the built in help that appears when you click the blue ? on the top right. I could not navigate around, and my mouse pointer seems to act weird. By that I mean if I hovered on the right over an entry on the left toolshelf the buttons hightlighted….
So, I just encountered that you can use the help in an other browser (firefox, safari,…) too, by using this url. You have to click in houdini first the ? to initialize the built in webserver, then you can this ur:
http://localhost:48626/ [localhost]
I hope that helps someone else, who have issues with it.