[xsl] xsl-fo: keep-with-next "always" not working sometimes

[Christian Kirchhoff <christian.kirchhoff@xxxxxxxxxx>]

 Hello,

the xsl-fo I am working on will be converted into a PDF with XEP/RenderX.

I have the following exemplary tagging:
<fo:block keep-together="always" keep-with-next="always">2.</fo:block>
<fo:block widows="5" orphans="5" hyphenate="false">
    Kein Lebenslaut stvrt die Natur<fo:block/>
    In ihrem herbstlich stillen Leide;<fo:block/>
    Es scheint die Sonne ldssig nur<fo:block/>
    Hernieder auf die braune Haide.<fo:block/>
    Da ist kein Baum, umwebt von Moos,<fo:block/>
    Aus dessen Zweigen Vvgel sdngen,<fo:block/>
    Da ist kein Fels, aus dessen Scho_<fo:block/>
    Krystallne Quellen lustig sprdngen!<fo:block/>
</fo:block>

With the givven page settings, the first line of the 2nd block ("Kein 
Lebenslaut stvrt die Natur") would appear alone on the bottom of the 
page. Because of the settings for widows and orphans that first line is 
rendered on a new page. And thus the content of the 1st block ("2.") is 
rendered alone as the last text on the actual page.

In my understanding the keep-with-next "always" should the cause the 1st 
and 2nd block to always appear on the same page. But apparently that is 
not the case. Is there any way to achieve what I want?

Any help would be greatly appreciated.

Best regards

Christian Kirchhoff
*Editura GmbH & Co. KG*
Tempelhofer Damm 2 7 12101 Berlin
www.editura.de
AG Berlin-Charlottenburg 7 HRA 43189 B 7 USt.Id. DE217180548
Geschdftsf|hrer: Ralf Szymanski