Issue with updatable views

It’s sometimes amazing, how many bugs there are still with elementary SQL.

Here is one concerning updatable views:

sokrates@12.1 > create table t ( v varchar2(30) );

Table created.

sokrates@12.1 > create view v as
  2  select v as dontdothatman, v as canbelostwheninserted
  3  from t; 

View created.

sokrates@12.1 > insert /* this is fine */ into v 
  2  values('fine', 'fine');

1 row created.

sokrates@12.1 > select * from v;

DONTDOTHATMAN		       CANBELOSTWHENINSERTED
------------------------------ ------------------------------
fine			       fine

sokrates@12.1 > insert /* exception expected because 1st value is lost */ into v
  2  values('this one is lost', 'why isnt that one lost ?');

1 row created.

sokrates@12.1 > select * from v;

DONTDOTHATMAN		       CANBELOSTWHENINSERTED
------------------------------ ------------------------------
fine			       fine
why isnt that one lost ?       why isnt that one lost ?