mdadm --export --detail format incorrect

The mdadm --export --detail command creates environment variable name/value pairs suitable to import into a scripts environment. The format of these has changed, and the change looks to be a bug.

Previously (prior to mdadm V4.1) the command would output in the following format:
MD_LEVEL=raid1
MD_DEVICES=2
MD_METADATA=1.2
MD_UUID=<redacted>
MD_NAME=<redacted>
MD_DEVICE_sdb_ROLE=0
MD_DEVICE_sdb_DEV=/dev/sdb

Now (mdadm V4.1) the command outputs in the following format:
MD_LEVEL=raid1
MD_DEVICES=2
MD_METADATA=1.2
MD_UUID=<redacted>
MD_NAME=<redacted>
MD_DEVICE_ev_sdb_ROLE=0
MD_DEVICE_ev_sdb_DEV=/dev/sdb

Note the differences in the the MD_DEVICE_<dev>_ROLE and MD_DEVICE_<dev>_DEV variables where an extra "ev" string has been included.

The "ev" string is added for all ROLE/DEV variables when multiple disks are included in the RAID.

As this form of the --detail command is made as a consistent API mechanism for scripts to use, it is important that it maintain correct and consistent behavior.

I am using Ubuntu (20.04.1 LTS) along with mdadm (4.1-5ubuntu1.2).