orderedlist with inheritnum problem

Hiya,

I'm marking up my nested ordered lists like this:

<orderedlist inheritnum="inherit" spacing="compact" numeration="arabic">

Nevertheless I don't get the notation form of x.y.z in my html output, 
but only one arabic number. If I don't specify the numeration attribute, 
I get my single numerical numeration in different styles on the various 
list levels. It seems, the inheritnum attribute doesn't get evaluated.

Am I doing something wrong or is this feature currently broken?

I'm using XSL stylesheets v1.62.4 together with xsltproc.

Using libxml 20511, libxslt 10033 and libexslt 722
xsltproc was compiled against libxml 20511, libxslt 10033 and libexslt 722
libxslt 10033 was compiled against libxml 20511
libexslt 722 was compiled against libxml 20511


Patrick