diff --git a/ui/src/api/assets.ts b/ui/src/api/assets.ts
index b895ae0b..25555a6a 100644
--- a/ui/src/api/assets.ts
+++ b/ui/src/api/assets.ts
@@ -2,9 +2,16 @@ import type { AssetImage } from "@paperclip/shared";
 import { api } from "./client";
 
 export const assetsApi = {
-  uploadImage: (companyId: string, file: File, namespace?: string) => {
+  uploadImage: async (companyId: string, file: File, namespace?: string) => {
+    // Read file data into memory eagerly so the fetch body is self-contained.
+    // Clipboard-paste File objects reference transient data that the browser may
+    // discard after the paste-event handler returns, causing ERR_ACCESS_DENIED
+    // when fetch() later tries to stream the FormData body.
+    const buffer = await file.arrayBuffer();
+    const safeFile = new File([buffer], file.name, { type: file.type });
+
     const form = new FormData();
-    form.append("file", file);
+    form.append("file", safeFile);
     if (namespace && namespace.trim().length > 0) {
       form.append("namespace", namespace.trim());
     }
diff --git a/ui/src/components/NewIssueDialog.tsx b/ui/src/components/NewIssueDialog.tsx
index 1aead1e9..1649d882 100644
--- a/ui/src/components/NewIssueDialog.tsx
+++ b/ui/src/components/NewIssueDialog.tsx
@@ -237,6 +237,7 @@ export function NewIssueDialog() {
     >
       <DialogContent
         showCloseButton={false}
+        aria-describedby={undefined}
         className={cn(
           "p-0 gap-0 flex flex-col max-h-[calc(100vh-6rem)]",
           expanded