Sync to Email field is not correctly stored in SugarCRM 7.7

Hi,
it seems Sugar 7.7 retains the 'Sync to Email client' checkbox only for the last contact you mark for sync (per user).

How to reproduce:
- set up new SugarCRM 7.7 instance with demo data
- mark several contacts for syncing to mail client

expected result:
all contacts are marked for sync

actual result:
only the last marked contact has the field set to true

This was tried with our instance migrated from SugarCRM 7.6.21, a newly defined on-demand instance, and a freshly installed demo instance. The problem occurs regardless of massupdate or single editing; there are no log entries

Can anyone confirm this problem? I already have opened a support case with Sugar and will keep this thread updated. IMHO this is too important to not share it.


Greets,
Mark