Subsystem "web": config changes are persisted even though the operation did fail

An attempt to create a connector subresource fails in domain mode:

[ERROR] 2011-05-16 15:03:32,641 [ERROR] Message{conciseMessage='Failed to create connector http2', detailedMessage='{
[ERROR] "outcome" => "failed",
[ERROR] "result" => {"server-groups" => {"main-server-group" => {
[ERROR] "server-two" => {
[ERROR] "host" => "local",
[ERROR] "response" => {
[ERROR] "outcome" => "failed",
[ERROR] "failure-description" =>

{"New missing/unsatisfied dependencies" => ["service jboss.binding.http2 (missing)"]}
[ERROR] }
[ERROR] },
[ERROR] "server-one" => {
[ERROR] "host" => "local",
[ERROR] "response" => {
[ERROR] "outcome" => "failed",
[ERROR] "failure-description" => {"New missing/unsatisfied dependencies" => ["service jboss.binding.http2 (missing)"]}

[ERROR] }
[ERROR] }
[ERROR] }}},

But the changes are written to disk (http2):

<subsystem xmlns="urn:jboss:domain:web:1.0">
<connector name="http" protocol="HTTP/1.1" socket-binding="http" scheme="http"/>
<connector name="http2" protocol="http" socket-binding="http2" scheme="http" enabled="true"/>
<virtual-server name="localhost">
<alias name="example.com"/>
</virtual-server>
</subsystem>