I was able to use the space bar to interact with the world like the enter key would, but it wouldn't let me bring up the menu in general if I wanted to look at the items or re-read some of the documents. I'm on windows 10 if that helps
I'll have a look in to it but I have a feeling if it was a bug I've already fixed it on my current build when I re-worked the controls. Thanks for the report though!