SSMS stopped loading my stored procedures after update

Microsoft SQL team released an update (version 13.0.15900.1) that resolves this issue: (Download SQL Server Management Studio (16.4.1))

Note that the workaround for version 13.0.15800.18: Tools -> Options -> SQL Server Object Explorer -> Scripting -> Convert user-defined data types to base types = True

Is adding "EXECUTE AS CALLER" to stored procedures and scalar functions

Once you install version: 13.0.15800.18 even if you uninstall and install an older version (Previous SQL Server Management Studio Releases) the problem continues