How can this be fixed?
Add the following rewrite rule as the first one to the Apache config:
RewriteRule ^/seaside/pier(.*)$
http://www.lukas-renggli.ch$1
[redirect,last]
Otherwise you can also write a custom redirect handler. There are some
inconsistencies in Seaside here.
Cheers,
Lukas
--
Lukas Renggli
http://www.lukas-renggli.ch