Details of workflows dissapear

[moravekl]

Steps to reproduce:

1. Run a workflow from "definitions"
2. Open that workflow up in "executed"
3. Click "Execution flow"
4. Click any other tab ("Task details" / "JSON")
5. The modal disappears and the screen remains blank.

This is the error from console:

The above error occurred in the <Grapher> component:
    in Grapher (at WorkflowDia.js:57)
    in div (at WorkflowDia.js:39)
    in WorkflowDia (at DetailsModal.js:348)
    in div (created by TabPane)
    in Transition (created by Fade)
    in Fade (created by TabPane)
    in TabPane (created by Tabs)
    in div (created by TabContent)
    in TabContent (created by Bootstrap(TabContent))
    in Bootstrap(TabContent) (created by Tabs)
    in TabContainer (created by Tabs)
    in Tabs (created by Uncontrolled(Tabs))
    in Uncontrolled(Tabs) (created by ForwardRef)
    in ForwardRef (at DetailsModal.js:327)
    in div (created by ModalBody)
    in ModalBody (at DetailsModal.js:313)
    in div (created by ModalDialog)
    in div (created by ModalDialog)
    in ModalDialog (created by Modal)
    in div (created by Modal)
    in Transition (created by Fade)
    in Fade (created by DialogTransition)
    in DialogTransition (created by Modal)
    in WaitForContainer (created by Portal)
    in Portal (created by Modal)
    in Modal (created by Modal)
    in Modal (created by Bootstrap(Modal))
    in Bootstrap(Modal) (at DetailsModal.js:309)
    in DetailsModal (at WorkflowExec.js:107)
    in div (at WorkflowExec.js:111)
    in WorkflowExec (created by ConnectFunction)
    in ConnectFunction (at WorkflowList.js:31)
    in div (created by TabPane)
    in Transition (created by Fade)
    in Fade (created by TabPane)
    in TabPane (created by Tabs)
    in div (created by TabContent)
    in TabContent (created by Bootstrap(TabContent))
    in Bootstrap(TabContent) (created by Tabs)
    in TabContainer (created by Tabs)
    in Tabs (created by Uncontrolled(Tabs))
    in Uncontrolled(Tabs) (created by ForwardRef)
    in ForwardRef (at WorkflowList.js:26)
    in div (created by Container)
    in Container (at WorkflowList.js:23)
    in WorkflowList (created by Context.Consumer)
    in Route (created by withRouter(WorkflowList))
    in withRouter(WorkflowList) (created by Context.Consumer)
    in Route (at App.js:40)
    in Switch (at App.js:26)
    in div (at App.js:50)
    in App (created by ConnectFunction)
    in ConnectFunction (at src/index.js:24)
    in Router (created by BrowserRouter)
    in BrowserRouter (at src/index.js:24)
    in Provider (at src/index.js:24)

Consider adding an error boundary to your tree to customize error handling behavior.
Visit https://fb.me/react-error-boundaries to learn more about error boundaries. index.js:1446
    e index.js:1446
    React 13
    unstable_runWithPriority scheduler.development.js:255
    React 7
NS_ERROR_FAILURE: add-label.js:20
    addLabel add-label.js:20
    createEdgeLabels create-edge-labels.js:18
    each d3.js:1455
    d3_selection_each d3.js:1462
    each d3.js:1454
    createEdgeLabels create-edge-labels.js:16
    fn render.js:22
    render Grapher.js:138
    React 16
    dispatchInteractiveEvent self-hosted:1035
NS_ERROR_FAILURE: add-label.js:20
    addLabel add-label.js:20
    createEdgeLabels create-edge-labels.js:18
    each d3.js:1455
    d3_selection_each d3.js:1462
    each d3.js:1454
    createEdgeLabels create-edge-labels.js:16
    fn render.js:22
    render Grapher.js:138
    React 12
    dispatchInteractiveEvent self-hosted:1035

[ChmaraX]

Firefox related issue