Can confirm that mentioning indeed doesn't work. The tag appears at first, but once all page resources are loaded the mention-tag is removed all together (so an username is not clickable either).
Any ETA on the update? @Pete T
Proper sidebar widget support would be highly appreciated. And it's a pity that the "(GS) Server List 3.0.6 by naXe" text can't be removed properly. I paid for this and still have to see that line of text.