This may be not a bug in JSPWiki. But it is at least a strange behaviour of standard browsers with standard HTML.

Following markup does not do what you expect. (it does work in the JSPWiki2.2 )

   This is an empty bold statement : ____ (4 underscores)
   This is an empty italic statement : ''''  (4 single quotes)

The markup generated by JSPWiki is correct, I assume, namely:

 
   <b/>
   <i/>

However, the browser renders this very strange: both italic and bold get turned on, but not turned off.

The markup generated by JSPWiki 2.2.x was different, and did avoid this behaviour.

  <b></b>
  <i></i>

Any HTML expert out there ?

-- DF