openejb client connetion pool broken in 1.7.5

With openejb-client-4.7.5.jar the ejb connection pool does not work anymore. There are a bunch of ConnectionOpend {uri = ejbd: // server: 4201} messages in the log. In my view, only TomEE 1.7.5 and OpenEJB 4.7.5 are affected. Blame is probably the commit 91472ad9b9493a45a97e7a739ec2cfb916727cc9 in branch tomee-1.7.x and especially the change in SocketConnectionFactory.java. This change did not occur in the master branch. Therefore, the 7 and 8 versions are probably not affected.