diff --git a/packages/trace-viewer/src/ui/sourceTab.tsx b/packages/trace-viewer/src/ui/sourceTab.tsx
index aebbbd872f..e9efe4395e 100644
--- a/packages/trace-viewer/src/ui/sourceTab.tsx
+++ b/packages/trace-viewer/src/ui/sourceTab.tsx
@@ -27,10 +27,9 @@ import type { StackFrame } from '@protocol/channels';
 export const SourceTab: React.FunctionComponent<{
   stack: StackFrame[] | undefined,
   sources: Map<string, SourceModel>,
-  hideStackFrames?: boolean,
   rootDir?: string,
   fallbackLocation?: SourceLocation,
-}> = ({ stack, sources, hideStackFrames, rootDir, fallbackLocation }) => {
+}> = ({ stack, sources, rootDir, fallbackLocation }) => {
   const [lastStack, setLastStack] = React.useState<StackFrame[] | undefined>();
   const [selectedFrame, setSelectedFrame] = React.useState<number>(0);
 
@@ -78,7 +77,7 @@ export const SourceTab: React.FunctionComponent<{
     return { source, highlight, targetLine, fileName };
   }, [stack, selectedFrame, rootDir, fallbackLocation], { source: { errors: [], content: 'Loading\u2026' }, highlight: [] });
 
-  return <SplitView sidebarSize={200} orientation='horizontal' sidebarHidden={hideStackFrames}>
+  return <SplitView sidebarSize={200} orientation='horizontal'>
     <div className='vbox' data-testid='source-code'>
       {fileName && <div className='source-tab-file-name'>{fileName}</div>}
       <CodeMirrorWrapper text={source.content || ''} language='javascript' highlight={highlight} revealLine={targetLine} readOnly={true} lineNumbers={true} />
diff --git a/packages/trace-viewer/src/ui/uiModeView.tsx b/packages/trace-viewer/src/ui/uiModeView.tsx
index 164167f272..c7406fb49f 100644
--- a/packages/trace-viewer/src/ui/uiModeView.tsx
+++ b/packages/trace-viewer/src/ui/uiModeView.tsx
@@ -589,7 +589,6 @@ const TraceView: React.FC<{
   return <Workbench
     key='workbench'
     model={model?.model}
-    hideStackFrames={true}
     showSourcesFirst={true}
     rootDir={rootDir}
     initialSelection={initialSelection}
diff --git a/packages/trace-viewer/src/ui/workbench.tsx b/packages/trace-viewer/src/ui/workbench.tsx
index dc08b95fff..bdc99a9c92 100644
--- a/packages/trace-viewer/src/ui/workbench.tsx
+++ b/packages/trace-viewer/src/ui/workbench.tsx
@@ -43,7 +43,6 @@ import type { UITestStatus } from './testUtils';
 
 export const Workbench: React.FunctionComponent<{
   model?: MultiTraceModel,
-  hideStackFrames?: boolean,
   showSourcesFirst?: boolean,
   rootDir?: string,
   fallbackLocation?: modelUtil.SourceLocation,
@@ -51,7 +50,7 @@ export const Workbench: React.FunctionComponent<{
   onSelectionChanged?: (action: ActionTraceEventInContext) => void,
   isLive?: boolean,
   status?: UITestStatus,
-}> = ({ model, hideStackFrames, showSourcesFirst, rootDir, fallbackLocation, initialSelection, onSelectionChanged, isLive, status }) => {
+}> = ({ model, showSourcesFirst, rootDir, fallbackLocation, initialSelection, onSelectionChanged, isLive, status }) => {
   const [selectedAction, setSelectedActionImpl] = React.useState<ActionTraceEventInContext | undefined>(undefined);
   const [revealedStack, setRevealedStack] = React.useState<StackFrame[] | undefined>(undefined);
   const [highlightedAction, setHighlightedAction] = React.useState<ActionTraceEventInContext | undefined>();
@@ -158,7 +157,6 @@ export const Workbench: React.FunctionComponent<{
     render: () => <SourceTab
       stack={revealedStack}
       sources={sources}
-      hideStackFrames={hideStackFrames}
       rootDir={rootDir}
       fallbackLocation={fallbackLocation} />
   };