diff --git a/src/renderer/hooks/usePrWriteActions.ts b/src/renderer/hooks/usePrWriteActions.ts
index 9e856884..d8042521 100644
--- a/src/renderer/hooks/usePrWriteActions.ts
+++ b/src/renderer/hooks/usePrWriteActions.ts
@@ -14,8 +14,12 @@ export interface UsePrWriteActionsArgs {
   onRefresh: () => void;
 }
 
+/** Which PR write action is currently in flight, so only its button shows a spinner. */
+export type PrWriteAction = "merge" | "close" | "ready" | "update";
+
 export interface UsePrWriteActionsResult {
   prLoading: boolean;
+  pendingAction: PrWriteAction | null;
   handleMergePr: (method: "merge" | "squash" | "rebase", admin?: boolean) => Promise<void>;
   handleClosePr: () => Promise<void>;
   handleMarkPrReady: () => Promise<void>;
@@ -30,7 +34,8 @@ export interface UsePrWriteActionsResult {
  */
 export function usePrWriteActions(args: UsePrWriteActionsArgs): UsePrWriteActionsResult {
   const { projectLocation, localSyncLocation, prKey, onRefresh } = args;
-  const [prLoading, setPrLoading] = useState(false);
+  const [pendingAction, setPendingAction] = useState<PrWriteAction | null>(null);
+  const prLoading = pendingAction !== null;
 
   function getCurrentPrData() {
     if (!prKey) return null;
@@ -43,7 +48,7 @@ export function usePrWriteActions(args: UsePrWriteActionsArgs): UsePrWriteAction
   ): Promise<void> {
     const prData = getCurrentPrData();
     if (!prData) return;
-    setPrLoading(true);
+    setPendingAction("merge");
     try {
       await readBridge().ghMergePr({
         projectLocation,
@@ -72,14 +77,14 @@ export function usePrWriteActions(args: UsePrWriteActionsArgs): UsePrWriteAction
         toast.danger(message);
       }
     } finally {
-      setPrLoading(false);
+      setPendingAction(null);
     }
   }
 
   async function handleClosePr(): Promise<void> {
     const prData = getCurrentPrData();
     if (!prData) return;
-    setPrLoading(true);
+    setPendingAction("close");
     try {
       await readBridge().ghClosePr({ projectLocation, prNumber: prData.number });
       if (prKey) {
@@ -89,14 +94,14 @@ export function usePrWriteActions(args: UsePrWriteActionsArgs): UsePrWriteAction
       console.error("[git] close PR failed", err);
       toast.danger(friendlyError(err));
     } finally {
-      setPrLoading(false);
+      setPendingAction(null);
     }
   }
 
   async function handleMarkPrReady(): Promise<void> {
     const prData = getCurrentPrData();
     if (!prData) return;
-    setPrLoading(true);
+    setPendingAction("ready");
     try {
       await readBridge().ghMarkPrReady({ projectLocation, prNumber: prData.number });
       if (prKey) {
@@ -107,14 +112,14 @@ export function usePrWriteActions(args: UsePrWriteActionsArgs): UsePrWriteAction
       console.error("[git] mark PR ready failed", err);
       toast.danger(friendlyError(err));
     } finally {
-      setPrLoading(false);
+      setPendingAction(null);
     }
   }
 
   async function handleUpdatePrBranch(rebase = false): Promise<void> {
     const prData = getCurrentPrData();
     if (!prData) return;
-    setPrLoading(true);
+    setPendingAction("update");
     try {
       await readBridge().ghUpdatePrBranch({
         projectLocation,
@@ -132,9 +137,16 @@ export function usePrWriteActions(args: UsePrWriteActionsArgs): UsePrWriteAction
       console.error("[git] update PR branch failed", err);
       toast.danger(friendlyError(err));
     } finally {
-      setPrLoading(false);
+      setPendingAction(null);
     }
   }
 
-  return { prLoading, handleMergePr, handleClosePr, handleMarkPrReady, handleUpdatePrBranch };
+  return {
+    prLoading,
+    pendingAction,
+    handleMergePr,
+    handleClosePr,
+    handleMarkPrReady,
+    handleUpdatePrBranch,
+  };
 }
diff --git a/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/GitReviewSidebar.tsx b/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/GitReviewSidebar.tsx
index f137f050..22800f4a 100644
--- a/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/GitReviewSidebar.tsx
+++ b/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/GitReviewSidebar.tsx
@@ -150,6 +150,7 @@ export function GitReviewSidebar(props: {
     prTargetBranch,
     setPrTargetBranch,
     prLoading,
+    prPendingAction,
     isGeneratingPr,
     handleCommit,
     handleGenerateMessage,
@@ -463,6 +464,7 @@ export function GitReviewSidebar(props: {
               projectId={project.id}
               worktreePath={worktreePath}
               prLoading={prLoading}
+              pendingAction={prPendingAction}
               handleMergePr={handleMergePr}
               handleClosePr={handleClosePr}
               handleMarkPrReady={handleMarkPrReady}
diff --git a/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/parts/PrSection.tsx b/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/parts/PrSection.tsx
index 977ae96d..7fd87f08 100644
--- a/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/parts/PrSection.tsx
+++ b/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/parts/PrSection.tsx
@@ -21,6 +21,7 @@ import {
 } from "@heroui/react";
 import { readBridge } from "@/renderer/bridge";
 import { PixelLoader } from "@/renderer/components/common";
+import type { PrWriteAction } from "@/renderer/hooks/usePrWriteActions";
 import {
   usePrMergeStateStatus,
   usePrMergeable,
@@ -47,6 +48,8 @@ export function PrSection(props: {
   projectId: string;
   worktreePath?: string | undefined;
   prLoading: boolean;
+  /** Which write action is in flight, so only its button spins (others stay disabled). */
+  pendingAction?: PrWriteAction | null | undefined;
   handleMergePr: (method: "merge" | "squash" | "rebase", admin?: boolean) => Promise<void>;
   handleClosePr: () => Promise<void>;
   handleMarkPrReady: () => Promise<void>;
@@ -57,6 +60,7 @@ export function PrSection(props: {
     projectId,
     worktreePath,
     prLoading,
+    pendingAction,
     handleMergePr,
     handleClosePr,
     handleMarkPrReady,
@@ -133,7 +137,7 @@ export function PrSection(props: {
             variant="tertiary"
             className="flex-1"
             isDisabled={prLoading}
-            isPending={prLoading}
+            isPending={pendingAction === "ready"}
             onPress={() => void handleMarkPrReady()}
           >
             {({ isPending }) => (
@@ -204,7 +208,7 @@ export function PrSection(props: {
                 variant="tertiary"
                 className="flex-1"
                 isDisabled={prLoading}
-                isPending={prLoading}
+                isPending={pendingAction === "update"}
                 onPress={() => void handleUpdatePrBranch(false)}
               >
                 {({ isPending }) => (
@@ -248,7 +252,7 @@ export function PrSection(props: {
               variant="tertiary"
               className="flex-1"
               isDisabled={prLoading || (isBlocked && !bypass)}
-              isPending={prLoading}
+              isPending={pendingAction === "merge"}
               onPress={() => void handleMergePr("squash", bypass)}
             >
               {({ isPending }) => (
diff --git a/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/parts/useGitReviewActions.ts b/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/parts/useGitReviewActions.ts
index e3ac0a7b..46d0943c 100644
--- a/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/parts/useGitReviewActions.ts
+++ b/src/renderer/views/GitReviewOverlay/parts/GitReviewSidebar/parts/useGitReviewActions.ts
@@ -593,6 +593,7 @@ export function useGitReviewActions(args: UseGitReviewActionsArgs) {
     prTargetBranch,
     setPrTargetBranch,
     prLoading,
+    prPendingAction: writeActions.pendingAction,
     isGeneratingPr,
     handleCommit,
     handleGenerateMessage,
diff --git a/src/renderer/views/PrReviewOverlay/parts/PrReviewSidebar.tsx b/src/renderer/views/PrReviewOverlay/parts/PrReviewSidebar.tsx
index c34b4726..2c1c1cf6 100644
--- a/src/renderer/views/PrReviewOverlay/parts/PrReviewSidebar.tsx
+++ b/src/renderer/views/PrReviewOverlay/parts/PrReviewSidebar.tsx
@@ -48,12 +48,18 @@ export function PrReviewSidebar(props: {
   } = props;
   const { isCollapsed, collapse, expand } = useSidebar();
   const [expanded, setExpanded] = useState(true);
-  const { prLoading, handleMergePr, handleClosePr, handleMarkPrReady, handleUpdatePrBranch } =
-    usePrWriteActions({
-      projectLocation,
-      prKey,
-      onRefresh,
-    });
+  const {
+    prLoading,
+    pendingAction,
+    handleMergePr,
+    handleClosePr,
+    handleMarkPrReady,
+    handleUpdatePrBranch,
+  } = usePrWriteActions({
+    projectLocation,
+    prKey,
+    onRefresh,
+  });
 
   const sorted = files.toSorted((a, b) =>
     compareFilesByDirThenName({ path: a.path }, { path: b.path }),
@@ -148,6 +154,7 @@ export function PrReviewSidebar(props: {
             projectId={projectId}
             worktreePath={worktreePath}
             prLoading={prLoading}
+            pendingAction={pendingAction}
             handleMergePr={handleMergePr}
             handleClosePr={handleClosePr}
             handleMarkPrReady={handleMarkPrReady}