diff --git a/packages/react-devtools-shared/src/devtools/store.js b/packages/react-devtools-shared/src/devtools/store.js
index 5466e798aad4..3137174aff85 100644
--- a/packages/react-devtools-shared/src/devtools/store.js
+++ b/packages/react-devtools-shared/src/devtools/store.js
@@ -972,6 +972,7 @@ export default class Store extends EventEmitter<{
             id: suspense.id,
             environment: environmentName,
             endTime: suspense.endTime,
+            hasUniqueSuspenders: suspense.hasUniqueSuspenders,
           };
           target.push(rootStep);
         } else {
@@ -983,6 +984,10 @@ export default class Store extends EventEmitter<{
             // If any root has a higher end time, let's use that.
             rootStep.endTime = suspense.endTime;
           }
+          if (!rootStep.hasUniqueSuspenders) {
+            // If any root has unique suspenders, the merged root should too.
+            rootStep.hasUniqueSuspenders = suspense.hasUniqueSuspenders;
+          }
         }
         this.pushTimelineStepsInDocumentOrder(
           suspense.children,
@@ -1051,6 +1056,7 @@ export default class Store extends EventEmitter<{
       // TODO: Get environment for Activity
       environment: null,
       endTime: 0,
+      hasUniqueSuspenders: true,
     });
 
     const transitionChildren = this.getSuspenseChildren(focusedTransitionID);
@@ -1106,6 +1112,7 @@ export default class Store extends EventEmitter<{
           id: child.id,
           environment: environmentName,
           endTime: maxEndTime,
+          hasUniqueSuspenders: child.hasUniqueSuspenders,
         });
       }
       this.pushTimelineStepsInDocumentOrder(
diff --git a/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseRects.css b/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseRects.css
index 6b43f873ae85..d16788d7e4bb 100644
--- a/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseRects.css
+++ b/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseRects.css
@@ -108,3 +108,7 @@
 .SuspenseRectsBoundary[data-selected='true'] > .SuspenseRectsRect {
    box-shadow: none;
 }
+
+.SuspenseRectsBoundaryNotSuspended {
+  --color-suspense: var(--color-dim);
+}
diff --git a/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseRects.js b/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseRects.js
index 69d4767a489f..5ea671377bca 100644
--- a/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseRects.js
+++ b/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseRects.js
@@ -192,7 +192,10 @@ function SuspenseRects({
       className={
         styles.SuspenseRectsBoundary +
         ' ' +
-        getClassNameForEnvironment(environment)
+        getClassNameForEnvironment(environment) +
+        (!suspense.hasUniqueSuspenders
+          ? ' ' + styles.SuspenseRectsBoundaryNotSuspended
+          : '')
       }
       visible={visible}
       selected={selected}
@@ -550,6 +553,7 @@ function SuspenseRectsContainer({
 
   let selectedBoundingBox = null;
   let selectedEnvironment = null;
+  let selectedHasUniqueSuspenders = true;
   if (isRootSelected) {
     selectedEnvironment = rootEnvironment;
   } else if (
@@ -563,6 +567,7 @@ function SuspenseRectsContainer({
       (selectedSuspenseNode.hasUniqueSuspenders || !uniqueSuspendersOnly)
     ) {
       selectedBoundingBox = getBoundingBox(selectedSuspenseNode.rects);
+      selectedHasUniqueSuspenders = selectedSuspenseNode.hasUniqueSuspenders;
       for (let i = 0; i < timeline.length; i++) {
         const timelineStep = timeline[i];
         if (timelineStep.id === inspectedElementID) {
@@ -605,7 +610,10 @@ function SuspenseRectsContainer({
               className={
                 styles.SuspenseRectOutline +
                 ' ' +
-                getClassNameForEnvironment(selectedEnvironment)
+                getClassNameForEnvironment(selectedEnvironment) +
+                (!selectedHasUniqueSuspenders
+                  ? ' ' + styles.SuspenseRectsBoundaryNotSuspended
+                  : '')
               }
               rect={selectedBoundingBox}
               adjust={true}
diff --git a/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseScrubber.css b/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseScrubber.css
index 7ccb92b78bb2..757b3afe2918 100644
--- a/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseScrubber.css
+++ b/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseScrubber.css
@@ -54,6 +54,14 @@
   background: var(--color-transition);
 }
 
+.SuspenseScrubberBeadNotSuspended {
+  background: color-mix(in srgb, var(--color-dim) 25%, transparent);
+}
+
+.SuspenseScrubberBeadNotSuspended.SuspenseScrubberBeadSelected {
+  background: var(--color-dim);
+}
+
 .SuspenseScrubberStepHighlight > .SuspenseScrubberBead {
   height: 0.75rem;
   transition: all 0.3s ease-out;
diff --git a/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseScrubber.js b/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseScrubber.js
index f8c0224c0bca..e6acb3cee7a9 100644
--- a/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseScrubber.js
+++ b/packages/react-devtools-shared/src/devtools/views/SuspenseTab/SuspenseScrubber.js
@@ -95,6 +95,9 @@ export default function SuspenseScrubber({
                 ? // The first step in the timeline is always a Transition (Initial Paint).
                   ' ' + styles.SuspenseScrubberBeadTransition
                 : '') +
+              (!step.hasUniqueSuspenders
+                ? ' ' + styles.SuspenseScrubberBeadNotSuspended
+                : '') +
               ' ' +
               getClassNameForEnvironment(environment) +
               (index <= value ? ' ' + styles.SuspenseScrubberBeadSelected : '')
diff --git a/packages/react-devtools-shared/src/frontend/types.js b/packages/react-devtools-shared/src/frontend/types.js
index a78831cf229b..fd3c02160811 100644
--- a/packages/react-devtools-shared/src/frontend/types.js
+++ b/packages/react-devtools-shared/src/frontend/types.js
@@ -211,6 +211,7 @@ export type SuspenseTimelineStep = {
   id: SuspenseNode['id'] | Element['id'], // TODO: Will become a group.
   environment: null | string,
   endTime: number,
+  hasUniqueSuspenders: boolean,
 };
 
 export type SuspenseNode = {