In https://en.wikipedia.org/w/index.php?title=Comparison_of_Scrum_software&oldid=674052633 you can see there is a reference for Trello and Hipchat integration in the 3rd table. However if you switch to Visual Editor, the reference is no longer visible.
This does not occur with the reference for LGPL, which is not part of a template call. The same bug also does not occur in a test I did in my sandbox which does not involve a table cell. So it only seems to occur for references inside template calls inside table cells.