Multiple Email address components values are changed to numbers and not sent

I have been trying to get a handle on this but I have no time. When email address are set by using component values those values are changed to intergers before the email is processed and so the mails to address in those components are not sent.

Submitted values are:

location: Demo site
location id: 132
Location user:
Location agent: 40
Location owner: 40
Locale email: 265
creators email: carl1@xxx.com
Art der Veranstaltung: Feier
   --Dein Termin--
   offen: Termin ist nicht bekannt


Wie viele Personen nehmen teil? 2
Möchtest Du die Location besichtigen, bevor Du buchst? nein
Persönliche Nachricht an den Vermieter: (400 Zeichen)
Vorname:
Name:
Email:
Firma:
Telefon:
Handy:
Straße:
PLZ:
Ort:
Contact:
  - Ich möchte per Email
  - Ich möchte per Telefon
AGBs & Teilnahmebedingungen: Ich habe die AGBs gelesen und akzeptiert
Bcc email: 132

The very first component (creators email) behaves as it should but (Bcc email) and (Location email) are changed after the form is sent to integer values. This happens using all form element types. Address using user defined addresses work fine.