Entity Framework (EF) 6 (or at least 6.13) Error - Missing Primary Keys

In the past EF would blow up when trying to make an *.edmx file on a table with no PK. As of EF 6 (or at least 6.13) it allows them but the result set returned when performing a join on a table will this version can/will be incorrect.

A deadly, but silent, error.

SQL Server Finding the Object Alter Date

select TOP 1 * from sys.procedures order by create_date desc 
select TOP 1 * from sys.tables  order by create_date desc 
select TOP 1 * from sys.views  order by create_date desc 

/*

CREATE PROC jkAlterProcTest 
AS 
SELECT 1 

CREATE TABLE jkAlterTableTest (a int) 

CREATE VIEW jkAlterViewTest 
AS 
SELECT a
FROM jkAlterTableTest 

ALTER PROC jkAlterProcTest 
AS 
SELECT 2

ALTER TABLE jkAlterTableTest ADD b int

ALTER VIEW jkAlterViewTest 
AS 
SELECT a, b 
FROM jkAlterTableTest 

*/