I do not really remember, which version brought the problem, but since a month or more. The empty name fields (prefix, midle, suffix) are auto filled with the first name. Only those contacts are updated, which used, e.g. phone call, sms.
This issue is related only to Davdroid contacts, and affects all my devices.
I do not really know what causes the issue, but no other sowftware part was updates/altered than Davdroid.
OS: Cyanogen 13 variant(Galaxy Express and Tab S 10.5), latest Davdroid and Egroupware 14.3.20160113.
The repeated names are pushed back to egroupware.
Any suggestions would be appreciated, where/how to debug the issue.