Fix value preview update

app/src/components/Sidebar/Sidebar.tsx

@@ -125,7 +125,7 @@ class Sidebar extends React.Component<Props, State> {
             <Topic node={this.props.node} didSelectNode={this.updateNode} />
           </ExpansionPanelDetails>
         </ExpansionPanel>
-        {<ValuePanel />}
+        <ValuePanel lastUpdate={this.props.node ? this.props.node.lastUpdate : 0} />
         <ExpansionPanel defaultExpanded={true}>
           <ExpansionPanelSummary expandIcon={<ExpandMore />} style={summaryStyle}>
             <Typography className={classes.heading}>Publish</Typography>

app/src/components/Sidebar/ValueRenderer/MessageHistory.tsx

@@ -1,12 +1,11 @@
 import * as q from '../../../../../backend/src/Model'
 import * as React from 'react'
 import BarChart from '@material-ui/icons/BarChart'
+import Copy from '../../helper/Copy'
 import DateFormatter from '../../helper/DateFormatter'
 import History from '../HistoryDrawer'
-import { TopicViewModel } from '../../../model/TopicViewModel'
 import { Base64Message } from '../../../../../backend/src/Model/Base64Message'
-import Copy from '../../helper/Copy';
+import { TopicViewModel } from '../../../model/TopicViewModel'
-import { selectTextWithCtrlA } from '../../../utils/handleTextSelectWithCtrlA';
 
 const PlotHistory = React.lazy(() => import('./PlotHistory'))
 
@@ -24,10 +23,10 @@ interface State {
 }
 
 class MessageHistory extends React.Component<Props, State> {
-
   private updateNode = throttle(() => {
     this.setState(this.state)
   }, 300)
+
   constructor(props: any) {
     super(props)
     this.state = {}

app/src/components/Sidebar/ValueRenderer/ValuePanel.tsx

@@ -35,6 +35,7 @@ interface Props {
   sidebarActions: typeof sidebarActions
   settingsActions: typeof settingsActions
   classes: any
+  lastUpdate: number
 }
 
 interface State {