diff --git a/packages/core/src/api/clipboard/toClipboard/copyExtension.ts b/packages/core/src/api/clipboard/toClipboard/copyExtension.ts
index 3a6aeaffd5..47dd18fc9a 100644
--- a/packages/core/src/api/clipboard/toClipboard/copyExtension.ts
+++ b/packages/core/src/api/clipboard/toClipboard/copyExtension.ts
@@ -1,5 +1,5 @@
 import { Extension } from "@tiptap/core";
-import { Fragment, Node } from "prosemirror-model";
+import { Fragment, Node, Slice } from "prosemirror-model";
 import { NodeSelection, Plugin } from "prosemirror-state";
 import { CellSelection } from "prosemirror-tables";
 import type { EditorView } from "prosemirror-view";
@@ -127,13 +127,23 @@ export function selectedFragmentToHTML<
     );
   }
 
+  const originalSlice = view.state.selection.content();
+
+  // When AllSelection is used, ProseMirror wraps contents in blockGroup node.
+  // Unwrap it to avoid nested blocks when pasting.
+
+  let selectedFragment = originalSlice.content;
+
+  if (selectedFragment.childCount === 1 && 
+    selectedFragment.firstChild?.type.name === "blockGroup") {
+      selectedFragment = selectedFragment.firstChild.content;
+    }
+
   // Uses default ProseMirror clipboard serialization.
   const clipboardHTML: string = view.serializeForClipboard(
-    view.state.selection.content(),
+    new Slice(selectedFragment, originalSlice.openStart, originalSlice.openEnd)
   ).dom.innerHTML;
 
-  const selectedFragment = view.state.selection.content().content;
-
   const externalHTML = fragmentToExternalHTML<BSchema, I, S>(
     view,
     selectedFragment,
diff --git a/packages/core/src/extensions/tiptap-extensions/KeyboardShortcuts/KeyboardShortcutsExtension.ts b/packages/core/src/extensions/tiptap-extensions/KeyboardShortcuts/KeyboardShortcutsExtension.ts
index c0578d7f38..6ca1961ddf 100644
--- a/packages/core/src/extensions/tiptap-extensions/KeyboardShortcuts/KeyboardShortcutsExtension.ts
+++ b/packages/core/src/extensions/tiptap-extensions/KeyboardShortcuts/KeyboardShortcutsExtension.ts
@@ -1,6 +1,6 @@
 import { Extension } from "@tiptap/core";
 import { Fragment, Node } from "prosemirror-model";
-import { TextSelection } from "prosemirror-state";
+import { AllSelection, TextSelection } from "prosemirror-state";
 
 import {
   getBottomNestedBlockInfo,
@@ -953,6 +953,17 @@ export const KeyboardShortcutsExtension = Extension.create<{
       "Mod-z": () => this.options.editor.undo(),
       "Mod-y": () => this.options.editor.redo(),
       "Shift-Mod-z": () => this.options.editor.redo(),
+      // Forces AllSelection from pos 0 to include non-editable blocks (e.g. images) that
+      // TextSelection would skip.
+      "Mod-a": () => {
+        const { doc } = this.options.editor.prosemirrorState;
+        this.options.editor.prosemirrorView?.dispatch(
+          this.options.editor.prosemirrorState.tr.setSelection(
+            new AllSelection(doc)
+          )
+        );
+        return true;
+      },
     };
   },
 });
diff --git a/tests/src/end-to-end/copypaste/copypaste.test.ts b/tests/src/end-to-end/copypaste/copypaste.test.ts
index aaf36897d6..e796b9d707 100644
--- a/tests/src/end-to-end/copypaste/copypaste.test.ts
+++ b/tests/src/end-to-end/copypaste/copypaste.test.ts
@@ -187,4 +187,30 @@ test.describe("Check Copy/Paste Functionality", () => {
 
     await compareDocToSnapshot(page, "images.json");
   });
+
+  test("Image as first block should be able to be copied using Ctrl+A", async ({
+    page,
+    browserName,
+  }) => {
+    test.skip(
+      browserName === "firefox" || browserName === "webkit",
+      "Firefox doesn't yet support the async clipboard API. Webkit copy/paste stopped working after updating to Playwright 1.33.",
+    );
+  
+    await focusOnEditor(page);
+  
+    const IMAGE_EMBED_URL = "https://placehold.co/800x540.png";
+    await executeSlashCommand(page, "image");
+  
+    await page.click(`[data-test="embed-tab"]`);
+    await page.click(`[data-test="embed-input"]`);
+    await page.keyboard.type(IMAGE_EMBED_URL);
+    await page.click(`[data-test="embed-input-button"]`);
+    await page.waitForSelector(`img[src="${IMAGE_EMBED_URL}"]`);
+  
+    await copyPasteAll(page);
+  
+    await compareDocToSnapshot(page, "imageAsFirstBlock.json");
+  });
+
 });