CLI authentication fails when --command is used

Description of problem:
CLI is unable to use --command argument, when authentication is used

How reproducible:
Always

Steps to Reproduce:
1. cd bin
2. ./standalone.sh &
./jboss-cli.sh -c command=/core-service=management/security-realm=ApplicationRealm/authentication=local:remove
./jboss-cli.sh -c command=/core-service=management/security-realm=ManagementRealm/authentication=local:remove
./jboss-cli.sh -c command=:shutdown
3. cd ..
4. echo "bob=81ce18184f7b1095a367d5fae624ac15" >> standalone/configuration/mgmt-users.properties
5. ./bin/standalone.sh &
6. ./bin/jboss-cli.sh -c --command=':shutdown'

Actual results:
Authenticating against security realm: ManagementRealm
Failed to connect to the controller: Unable to authenticate against controller at localhost:9990: Authentication failed: all available authentication mechanisms failed:
DIGEST-MD5: java.lang.NullPointerException

Expected results:
manually set login information (bob, admin123@) and ":shutdown" command will be executed

Additional info:
These commands are working correctly:
6. ./bin/jboss-cli.sh -c
7. bob
admin123@
:shutdown
exit