diff --git a/packages/react-reconciler/src/ReactFiberWorkLoop.js b/packages/react-reconciler/src/ReactFiberWorkLoop.js
index 15a260bc660c..f0c75e089127 100644
--- a/packages/react-reconciler/src/ReactFiberWorkLoop.js
+++ b/packages/react-reconciler/src/ReactFiberWorkLoop.js
@@ -1125,7 +1125,9 @@ export function performWorkOnRoot(
   forceSync: boolean,
 ): void {
   if ((executionContext & (RenderContext | CommitContext)) !== NoContext) {
-    throw new Error('Should not already be working.');
+    // React Issue #17355: Prevent crash during breakpoints
+    console.error('Should not already be working.');
+    return;
   }
 
   if (enableProfilerTimer && enableComponentPerformanceTrack) {
@@ -3517,7 +3519,9 @@ function completeRoot(
   flushRenderPhaseStrictModeWarningsInDEV();
 
   if ((executionContext & (RenderContext | CommitContext)) !== NoContext) {
-    throw new Error('Should not already be working.');
+    // React Issue #17355: Prevent crash during breakpoints
+    console.error('Should not already be working.');
+    return;
   }
 
   if (enableProfilerTimer && enableComponentPerformanceTrack) {