1 files changed, 7 insertions, 1 deletions
diff --git a/src/client/views/collections/CollectionStackedTimeline.tsx b/src/client/views/collections/CollectionStackedTimeline.tsx
index b1afb998b..c83174d87 100644
--- a/src/client/views/collections/CollectionStackedTimeline.tsx
+++ b/src/client/views/collections/CollectionStackedTimeline.tsx
@@ -689,6 +689,12 @@ class StackedTimelineAnchor extends React.Component<StackedTimelineAnchorProps>
         super(props);
         this._lastTimecode = this.props.currentTimecode();
     }
+
+    computeTitle = () => {
+        const start = Math.max(NumCast(this.props.mark[this.props.startTag]), this.props.trimStart) - this.props.trimStart;
+        const end = Math.min(NumCast(this.props.mark[this.props.endTag]), this.props.trimEnd) - this.props.trimStart;
+        return `#${formatTime(start)}-${formatTime(end)}`;
+    }
     componentDidMount() {
         this._disposer = reaction(
             () => this.props.currentTimecode(),
@@ -809,7 +815,7 @@ class StackedTimelineAnchor extends React.Component<StackedTimelineAnchorProps>
                     DataDoc={undefined}
                     renderDepth={this.props.renderDepth + 1}
                     LayoutTemplate={undefined}
-                    LayoutTemplateString={LabelBox.LayoutString("data")}
+                    LayoutTemplateString={LabelBox.LayoutStringWithTitle(LabelBox, "data", this.computeTitle())}
                     isDocumentActive={this.props.isDocumentActive}
                     PanelWidth={width}
                     PanelHeight={height}