Multiple boxes on META breaks ConnectionRouteManager3

[brollb]

Creating multiple boxes on the META page causes routing error (in ConnectionRouteManager3)

hashUpdateHandler invoked loading and it returned error #f8f1c6737d40601e988e84cfdb452813cfc17a1f TypeError: Cannot read property 'ports' of undefined
    at ConnectionRouteManager3._updateBoxConnectionAreas (http://localhost:8888/js/Widgets/DiagramDesigner/ConnectionRouteManager3.js:511:34)
    at ConnectionRouteManager3._modifyItem (http://localhost:8888/js/Widgets/DiagramDesigner/ConnectionRouteManager3.js:484:13)
    at ConnectionRouteManager3._updatePort (http://localhost:8888/js/Widgets/DiagramDesigner/ConnectionRouteManager3.js:471:18)
    at ConnectionRouteManager3.insertConnection (http://localhost:8888/js/Widgets/DiagramDesigner/ConnectionRouteManager3.js:343:14)
    at Array.ConnectionRouteManager3.initialize._onComponentCreate (http://localhost:8888/js/Widgets/DiagramDesigner/ConnectionRouteManager3.js:183:22)
    at h (http://localhost:8888/common/EventDispatcher.js:101:27)
    at EventDispatcher.dispatchEvent (http://localhost:8888/common/EventDispatcher.js:84:17)
    at DiagramDesignerWidget._refreshScreen.dispatchEvents (http://localhost:8888/js/Widgets/DiagramDesigner/DiagramDesignerWidget.js:710:22)
    at DiagramDesignerWidget._refreshScreen (http://localhost:8888/js/Widgets/DiagramDesigner/DiagramDesignerWidget.js:714:9)
    at DiagramDesignerWidget._tryRefreshScreen (http://localhost:8888/js/Widgets/DiagramDesigner/DiagramDesignerWidget.js:643:18)log.error @ logger.js:66(anonymous function) @ client.js:637(anonymous function) @ client.js:1351(anonymous function) @ client.js:1312_rejected @ q.js:844(anonymous function) @ q.js:870Promise.when @ q.js:1122promise.promiseDispatch @ q.js:788(anonymous function) @ q.js:604runSingle @ q.js:137flush @ q.js:125