postgres-operator: Permission issue with tls cert after upgrading to 1.5

After upgrading 1.4 -> 1.5 my cluster couldn’t init.

I’ve checked that certs are mounted into container, and I’m able to read them as a root user. Not sure where to look next.

Logs from cluster pods:

...
selecting default max_connections ... 100
selecting default shared_buffers ... 128MB
selecting default time zone ... Etc/UTC
creating configuration files ... ok
running bootstrap script ... ok
performing post-bootstrap initialization ... ok
syncing data to disk ... ok

Success. You can now start the database server using:

    /usr/lib/postgresql/12/bin/pg_ctl -D /home/postgres/pgdata/pgroot/data -l logfile start

2020-05-20 14:40:25 UTC [301]: [1-1] 5ec54159.12d 0     FATAL:  could not load server certificate file "/tls/tls.crt": Permission denied
2020-05-20 14:40:25 UTC [301]: [2-1] 5ec54159.12d 0     LOG:  database system is shut down
2020-05-20 14:40:25,108 INFO: postmaster pid=301
/var/run/postgresql:5432 - no response
2020-05-20 14:40:25,121 INFO: removing initialize key after failed attempt to bootstrap the cluster
2020-05-20 14:40:25,137 INFO: renaming data directory to /home/postgres/pgdata/pgroot/data_2020-05-20-14-40-25
2020-05-20 14:40:25,587 INFO: Lock owner: None; I am grafana-cluster-0
Traceback (most recent call last):
  File "/usr/local/bin/patroni", line 11, in <module>
    load_entry_point('patroni==1.6.5', 'console_scripts', 'patroni')()
  File "/usr/local/lib/python3.6/dist-packages/patroni/__init__.py", line 235, in main
    return patroni_main()
  File "/usr/local/lib/python3.6/dist-packages/patroni/__init__.py", line 199, in patroni_main
    patroni.run()
  File "/usr/local/lib/python3.6/dist-packages/patroni/__init__.py", line 135, in run
    logger.info(self.ha.run_cycle())
  File "/usr/local/lib/python3.6/dist-packages/patroni/ha.py", line 1370, in run_cycle
    info = self._run_cycle()
  File "/usr/local/lib/python3.6/dist-packages/patroni/ha.py", line 1277, in _run_cycle
    return self.post_bootstrap()
  File "/usr/local/lib/python3.6/dist-packages/patroni/ha.py", line 1173, in post_bootstrap
    self.cancel_initialization()
  File "/usr/local/lib/python3.6/dist-packages/patroni/ha.py", line 1168, in cancel_initialization
    raise PatroniException('Failed to bootstrap cluster')
patroni.exceptions.PatroniException: 'Failed to bootstrap cluster'
/run/service/patroni: finished with code=1 signal=0
/run/service/patroni: exceeded maximum number of restarts 5
stopping /run/service/patroni
timeout: finish: .: (pid 303) 10s, want down

Permissions in container:

root@grafana-cluster-0:/home/postgres# ls -la /tls
total 4
drwxrwxrwt 3 root root  120 May 20 15:16 .
drwxr-xr-x 1 root root 4096 May 20 15:17 ..
drwxr-xr-x 2 root root   80 May 20 15:16 ..2020_05_20_15_16_36.928412376
lrwxrwxrwx 1 root root   31 May 20 15:16 ..data -> ..2020_05_20_15_16_36.928412376
lrwxrwxrwx 1 root root   14 May 20 15:16 tls.crt -> ..data/tls.crt
lrwxrwxrwx 1 root root   14 May 20 15:16 tls.key -> ..data/tls.key