Unexpected query results

Hello,

I've encountered with a problem running a query that with previous releases
worked fine.

Thats the query:
SELECT * FROM diagnostics where codigo LIKE '103.%';

the string in the like statment could be any code, including any character
in [ 'A' - 'Z', '.' , '0' - '9'].

With previous releases that returns all the records that 'codigo' begins
with '103.' but with release 7.03 this returns 0 rows. If I write LIKE
'103%' it works again, but I must filter for codes with the dot.

The field type for codigo is character varying(6)

Thanks

Miguel Juan
Mallorca - Spain