Thanks for your help! That was the issue.
Unfortunately, I can't upgrade to JSF 1.2_03 due to Netbeans VisualWeb 5.5 extension - which has a bug with in its webuijsf-tagblib (as decribed somewhere here in this forum).
The workaround for me is to enable cookies during development the next weeks and to upgrade VisualWeb when an update is available
Greetings,
jiai
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