Empty "Used in actions" in media type list when using only recovery or update operations

1. Create media type
2. Create action an choose "Recovery operations" or "Update operations" (but do not choose "Operations").
3. Select "Send message to" and "Send only to" and then choose that media type.
4. Go to media types and observe there is nothing in "Used in actions". Try to delete the media type and system won't allow it.

Related issue and still reproducible: https://support.zabbix.com/browse/ZBXNEXT-4165
This issue is about choosing "Send only to" option "All" and then similarly the column "Used in actions" is empty.