When you start using SQL Server Management Studio (SSMS) for SQL Server 2016, you may notice a new
bug feature to do with the Results Grid. If you copy and paste one or more cells from the results grid the copied text loses any carriage returns (CR) and line feeds (LF). To avoid too much head scratching, just remember there is a new setting available. You can access this via Options dialog from the Tools menu (Tools –> Options). Navigate to the Query Results –> SQL Server –> Results to Grid section as shown below. The offending item is the Retain CR/LF on copy or save, which you probably want to be checked to match the behaviour of previous versions of SSMS.
Options dialog from SSMS June 2016 generally available release (13.0.15000.23)
For reference here is dialog from SQL Server 2014 SSMS (12.0.4213.0) –