Wrong capacity detected for hard drives attached to external enclosure after reboot

[AndreaPro]

Is this the right place for my bug report?
I've reported this bug that I was thinking was related to blockdev command, but the developer suggested that it is a Kernel issue

Describe the bug
I have an Orico 4 Bay enclosure that I use with 2 HDDs for now on a Rspberry Pi4 64 bit updated to the latest version of Debian Buster and running OMV.
If I turn on the enclosure and afterwards the system everything works fine. If I reboot the system, or if I turn it of and turn it on again without turning off the enclosure at the next boot the blockdev

This is the output of the command when I turn on the enclosure and power up the system afterwards:

pi@raspberrypi:~ $ sudo blockdev --getsize64 /dev/sdb
8001563222016
pi@raspberrypi:~ $ sudo df -PTh | grep /dev/sdb
/dev/sdb1      btrfs     7.3T  2.2T  5.2T  29% /srv/dev-disk-by-label-01

This is the output of the command if I reboot or if I shutdown and power on again without turning off and on the enclosure:

pi@raspberrypi:~ $ sudo blockdev --getsize64 /dev/sdc
129986248068418560
pi@raspberrypi:~ $ sudo df -PTh | grep /dev/sdc
/dev/sdc1      btrfs     7.3T  2.2T  5.2T  29% /srv/dev-disk-by-label-01

If I use the system in this condition after some minutes it becomes unstable and I have to turn everything off and back on.

To reproduce
I've tried and I experience this issue even on new OS installation of Raspberry OS 32 and 64 bits

Expected behaviour
Be able to detect the disk capacity correctly if I reboot the Pi or if I turn it off and back on again without powering off the enclosure.

System

• Which model of Raspberry Pi?
  Pi4 4GB
• Which OS and version (cat /etc/rpi-issue)?
  Raspberry Pi reference 2020-05-27
  Generated using pi-gen, https://github.com/RPi-Distro/pi-gen, 30e2dd32ba47cc3bec15ab1413c16a17e5797775, stage4
• Which firmware version (vcgencmd version)?
  Copyright (c) 2012 Broadcom
  version ab1181cc0cb6df52bfae3b1d3fef0ce7c325166c (clean) (release) (start_cd)
• Which kernel version (uname -a)?
  Linux raspberrypi 5.4.79-v8+ "apt-get dist-upgrade" on a clean Raspbian 1.9 install outputs many pypy-upstream removal warnings #1373 SMP PREEMPT Mon Nov 23 13:32:41 GMT 2020 aarch64 GNU/Linux