Concurrent access to business-central is causing issues

Issue

If two persons use the jBPM designer concurrently on different machines or on two different browser on the same machine, after a while one of the screens will show unexpected phenomena on the screen. Sometimes the jbpm designer shows a cricked view of a process, sometimes the project explorer pane on the left side is missing.

If a developer on one machine get's a verification error, it will be seen on the other machine immediately.