LyX ⇒ Nomenclature without correct head line entry?

[thowi]

Hi all together

I have a problem which just occured when my nomenclature got larger and now needs several pages. Normally my chapter titles are shown in the page head and so it does with my index, listings, list of tables and so on... except the nomenclature. As you can see in the attachted minimal example, that the following pages of the nomenclature takes the site heading from the chapter shown before the nomenclature.

Do you have an idea why the heading is wrong in that case?

Thank you very much for your help!
Cheers, Thomas