Mount of encrypted dataset fails with I/O error between ZFS versions about zfs HOT 4 CLOSED

# ./scripts/cmd-macos.sh zfs mount -al
Enter passphrase for 'testpool/encrypted':
testpool/encrypted   95Mi  1.0Mi   94Mi     2%      75    192692    0%   /Volumes/testpool/encrypted
-rw-r--r--  1 root  wheel  26802 Feb 26 04:51 zfs-man-page

david@macbook ttys000 [0] /usr/obj
07:55:52 $ zpool status testpool
  pool: testpool
 state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
	still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
	the pool may no longer be accessible by software that does not support
	the features. See zpool-features(5) for details.
config:

	NAME                   STATE     READ WRITE CKSUM
	testpool               ONLINE       0     0     0
	  /usr/obj/test-zpool  ONLINE       0     0     0

errors: No known data errors

david@macbook ttys000 [0] /usr/obj
07:57:39 $ sudo zfs mount -lv testpool/encrypted
Enter passphrase for 'testpool/encrypted':
do_mount calling mount with fstype zfs, rpath /Volumes/testpool/encrypted, fspec testpool/encrypted, mflag 0, optptr defaults,atime,strictatime,dev,exec,rw,setuid,nomand,zfsutil, optlen 60, devdisk 0, ispool 0
cannot mount 'testpool/encrypted': Unknown error: -1

david@macbook ttys000 [1] /usr/obj
07:57:49 $ sudo zpool status -v testpool
  pool: testpool
 state: ONLINE
status: One or more devices has experienced an error resulting in data
	corruption.  Applications may be affected.
action: Restore the file in question if possible.  Otherwise restore the
	entire pool from backup.
   see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-8A
config:

	NAME                   STATE     READ WRITE CKSUM
	testpool               ONLINE       0     0     0
	  /usr/obj/test-zpool  ONLINE       0     0     0

errors: Permanent errors have been detected in the following files:

        testpool/encrypted:<0x0>

david@macbook ttys000 [0] /usr/obj
07:58:33 $ sudo zpool scrub testpool

david@macbook ttys000 [0] /usr/obj
07:58:54 $ sudo zpool status -v testpool
  pool: testpool
 state: ONLINE
status: Some supported features are not enabled on the pool. The pool can
	still be used, but some features are unavailable.
action: Enable all features using 'zpool upgrade'. Once this is done,
	the pool may no longer be accessible by software that does not support
	the features. See zpool-features(5) for details.
  scan: scrub repaired 0B in 00:00:00 with 0 errors on Fri Feb 26 07:58:54 2021
config:

	NAME                   STATE     READ WRITE CKSUM
	testpool               ONLINE       0     0     0
	  /usr/obj/test-zpool  ONLINE       0     0     0

errors: No known data errors