In the latest update, we can now auto-complete names with spaces but when the reply is posted, the quoted names aren't linked like it does with names without spaces.
Could you link me to an example of this happening? It should put quotes around the name and work normally.
Here's one: http://discussions.agilebits.com/discussion/comment/109746/#Comment_109746
I have a feeling it might be related to our theme.
I chased this up with the developers, this is a known issue and they are looking into it. I cant give a proper ETA on a fix for it, but I will let you know when we have them working.
If you have a small selection of users with spaces in their name, you can manually take them out. Otherwise, I have you noted to notify when we push a patch for this.