Alessandro,
HTH - Andrey
No, it is a consequence of using 'incomplete recovery' clause of RECOVER command, i.e. any of UNTIL and/or USING BACKUP CONTROLFILE. When you do so, a mark is placed in the controlfile used during RECOVER command execution, which means - "Insist on opening database with RESETLOGS with this particular controlfile".
....I accept your description, but it's strange as, during recovery, I used "recover database using backup controlfile until cancel;"
Thanks,
Alessandro