Samsung devices: No Header/Body

Hi Forum,

if a user receives mail via distribution list, our customer noticed that on their samsung galaxy devices only the header is shown.
More detailed: If the sender uses a group in his/her personal address book, then a recipient does only see the header on his samsung device.
If the group is in the BCC field it even gets worse, then the mail never shows up on the mobile device.
And the problem is reproducible every time.

On other devices like LG or Apple the groups in personal address books work fine.
System distribution lists also work fine on all devices.

Models are exactly Galaxy S3 and S4
OS Android 4.1.2

Did someone ever experience a similar problem with personal distribution lists aka groups?

Thanks in advance!

Cheers,
Pascal