NAV 2017 - SQL Error on client - Must restart service tier

I have experienced that users get a mistake in the RTC client such as the following

"The prepared statement handle 5 is not valid in this context. Please verify that current database, user default schema, and ANSI_NULLS and QUOTED_IDENTIFIER set options are not changed since the handle is prepared. "

Have anyone experienced the same - I can't seem to access the KB for CU1 as Microsoft is doing some updating, I'm very interested to find out of this is some bug or if I have made some poor programming somewhere. It happened today, and the users couldn't do anything until I restarted the service tier, and everything fine.

Full error from NAV 2017 Server Event log

Server instance: DynamicsNAV100NAS
Tenant ID:
<ii>User:
Type: Microsoft.Dynamics.Nav.Types.Exceptions.NavSqlException
ErrorNumber: 586
SuppressMessage: False
SuppressExceptionCreatedEvent: False
FatalityScope: None
Message:
<ii>The following SQL error was unexpected:
The prepared statement handle 5 is not valid in this context. Please verify that current database, user default schema, and ANSI_NULLS and QUOTED_IDENTIFIER set options are not changed since the handle is prepared.