The following code with Webwork 2.2.3:
<ww:if test="true">
   foo
   <ww:if test="false">
      foofoo
   </ww:if>
</ww:if>
<ww:else>
   bar
</ww:else>

will result in:
foo bar

The same code with Webwork 2.2.2 results in:
foo

as expected.

I believe this is due to WW-1328

Reverting the changes to Else (and ElseIf) classes fixes the problem.