The Infinispan subsystem's default remote-timeout is lower than its default locking acquire-timeout, which causes remote calls that get a lock timeout to abort too early with the wrong error message.

jboss-as-infinispan_12_0.xsd

    <xs:attribute name="remote-timeout" type="xs:long" default="10000">

    <xs:attribute name="acquire-timeout" type="xs:long" default="15000">

The default remote-timeout should be increased to 17500 (which is what RHDG uses as its default remote-timeout with acquire-timeout=15000).