Adding more that 16 chain replies to a comment breaks the comments tab with a velocity macro error.

Steps to reproduce the problem :

-Login to xwiki
-add a comment
-reply to that comment
-reply to the reply

• and so on

After putting the 17th reply, the comments tab will break with a velocity error. The depth of the comments should be limited to this amount.

Also, note that UI-breaks too because of indentation.

Screenshot attached

Stack Trace attached