TELEGRAF: omit_hostname not working, overhang hostname not working

Hello,
this is really annoying. Preamble: the host where telegraf is running on is named as telegraf.

OMIT_HOSTNAME
In my telegraf.conf file I setup the parameter omit_hostname = true. When I look into the the bucket data, I see that all records are tagged with the hostname telegraf, but I instructed to omit it!

OVERRIDING HOSTNAME
I then also modified the telegraf.conf file with the parameter hostname = "skyrocket" and omit_hostname ignored.
Well, when I look into the bucket data, I keep getting hostname as telegraf.

Is there a way to get this running or not?
Thank you.