fo:wrapper doesn't display some content

[Petr Andrs <pa...@artax.karlin.mff.cuni.cz>]

When some text is directly included into fo:wrapper object, it is not 
displayed.
When I use something like this:

normal text <fo:wrapper color="red">red text</fo:wrapper> more normal 
text

instead of displaying red "red text" nothing is displayed.

when I surround text inside fo:wrapper into fo:inline resulting in 
this:

normal text <fo:wrapper color="blue"><fo:inline>blue 
text</fo:inline></fo:wrapper> more normal text

things seems to be OK, but this shouldn't be nescessary