'google contacts API not updating the diplayName

I am using the google contacts api for synchronizing the company employee contact information with google contacts. I experienced an error: for some reason, the displayName is never updated. The Names are updated correctly,as seen in 1, but for some reason, the displayed Name is not. When I look JSON I can see, the field "displayNameLastFirst" is updated with the new name though. Since displayName and displayNameLastFirst are both output only fields, i don't know, where the difference is, that one is updated and the other is not. Since i don't belive, this is the intended behavior, is there a solution for this problem?



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