RMAN seems not do delete backupset based on Policy

A little bit wired and not explained by RMAN at all:

For the Background: I backup only Archive Redo Logs.

I have a recovery Window of 1 Day (Tests).

[oracle@dev02-db01 dbhome_1]$ date

Mon Dec 10 09:24:24 CET 2018

RMAN> LIST BACKUP SUMMARY;

List of Backups

===============

Key     TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag

------- -- -- - ----------- --------------- ------- ------- ---------- ---

8       B  A  A DISK        05-DEC-18       1       1       NO         TAG20181205T001021

10      B  A  A DISK        05-DEC-18       1       1       NO         TAG20181205T081853

12      B  A  A DISK        05-DEC-18       1       1       NO         TAG20181205T093615

14      B  A  A DISK        06-DEC-18       1       1       NO         TAG20181206T072108

15      B  A  A DISK        06-DEC-18       1       1       NO         TAG20181206T072108