I noticed this happened to us when we were using Clearspace 1.0.x series, but it seems to be fixed in Clearspace 1.1.x series.
In the instance I'm using, you have to highlight some text in the rich text editor before the chain icon gets highlighted. Does that do the trick?
I was wondering if you were going to change that in the Rich Text Editor so you do not have to highlight text to activate the chain icon. For web addresses it is a really nice feature, but sometimes I just want to link to another Clearspace document and having to type in something miscellaneous and highlight it to get the editor is inconvenient.
I do have to say though that the Rich Text Editor is by far one of the nicest features of Clearspace! Thanks!