I can describe the issue a little better now. I had not reactivated the Page Header add-on in my first attempt. When I did just now – same problem. I then downloaded and installed the fresh PH package from your web space, just to make sure, and yes, the problem persists. So it is without doubt connected with that package.
Then, on my other site – Page Header activated – there is no such problem!
So let us simpply ignore this issue since I dont think I will use that plugin on this site (the Hooks can do the same job, right?).
Have a nice weekend
Jo