SDDC Manager 5.x
SDDC Manager 9.x
VMware NSX
This occurs because SDDC Manager does not pass the Search Domain parameter when deploying NSX.
Broadcom is aware of this issue. There is currently no resolution. Please subscribe to this article to be informed when a fix is available (see How to subscribe to an Article)
Workaround:
The Search Domain can also be manually configured in NSX Manager.