diff --git a/core/app/components/forms/AddRelatedPubsPanel.tsx b/core/app/components/forms/AddRelatedPubsPanel.tsx
index 04dffa6dc..4889fa0c8 100644
--- a/core/app/components/forms/AddRelatedPubsPanel.tsx
+++ b/core/app/components/forms/AddRelatedPubsPanel.tsx
@@ -45,7 +45,7 @@ const getColumns = () =>
 			cell: ({ row }) => {
 				return (
 					<div className="flex items-center gap-2">
-						<span>{row.original.title}</span>
+						<span>{row.original.title || row.original.id}</span>
 					</div>
 				);
 			},
@@ -91,7 +91,11 @@ export const AddRelatedPubsPanel = ({
 				<Button variant="outline" className="flex-1" onClick={onCancel}>
 					Cancel
 				</Button>
-				<Button onClick={handleAdd} className="flex-1 bg-blue-500 hover:bg-blue-600">
+				<Button
+					data-testid="add-related-pub-button"
+					onClick={handleAdd}
+					className="flex-1 bg-blue-500 hover:bg-blue-600"
+				>
 					Add
 				</Button>
 			</div>
diff --git a/core/app/components/forms/elements/RelatedPubsElement.tsx b/core/app/components/forms/elements/RelatedPubsElement.tsx
index 91cb0b45b..4a5ae6c26 100644
--- a/core/app/components/forms/elements/RelatedPubsElement.tsx
+++ b/core/app/components/forms/elements/RelatedPubsElement.tsx
@@ -46,7 +46,7 @@ const RelatedPubBlock = ({
 				<Button
 					variant="ghost"
 					className="p-2 text-neutral-400 hover:bg-white hover:text-red-500"
-					aria-label="Delete related pub"
+					aria-label="Delete link to related pub"
 					onClick={onRemove}
 				>
 					<Trash size={24} />
@@ -84,7 +84,12 @@ export const ConfigureRelatedValue = ({
 	) : (
 		<Popover open={isPopoverOpen} onOpenChange={setPopoverIsOpen}>
 			<PopoverTrigger asChild>
-				<Button variant="link" size="sm" className="flex h-4 gap-1 p-0 text-blue-500">
+				<Button
+					data-testid="add-related-value"
+					variant="link"
+					size="sm"
+					className="flex h-4 gap-1 p-0 text-blue-500"
+				>
 					Add {label} <Plus size={12} />
 				</Button>
 			</PopoverTrigger>
@@ -144,7 +149,7 @@ export const RelatedPubsElement = ({
 						}
 					};
 					return (
-						<FormItem>
+						<FormItem data-testid={`related-pubs-${label}`}>
 							{showPanel && (
 								<AddRelatedPubsPanel
 									title={`Add ${label}`}
diff --git a/core/playwright/externalFormCreatePub.spec.ts b/core/playwright/externalFormCreatePub.spec.ts
index a8819288b..9e0a825e7 100644
--- a/core/playwright/externalFormCreatePub.spec.ts
+++ b/core/playwright/externalFormCreatePub.spec.ts
@@ -8,6 +8,7 @@ import { FieldsPage } from "./fixtures/fields-page";
 import { FormsEditPage } from "./fixtures/forms-edit-page";
 import { FormsPage } from "./fixtures/forms-page";
 import { LoginPage } from "./fixtures/login-page";
+import { PubsPage } from "./fixtures/pubs-page";
 import { createCommunity } from "./helpers";
 
 const now = new Date().getTime();
@@ -230,3 +231,112 @@ test.describe("Rich text editor", () => {
 		await expect(page.getByRole("link", { name: actualTitle })).toHaveCount(1);
 	});
 });
+
+test.describe("Related pubs", () => {
+	test("Can add related pubs", async () => {
+		// Create a related pub we can link to
+		const relatedPubTitle = "related pub";
+		const pubsPage = new PubsPage(page, COMMUNITY_SLUG);
+		await pubsPage.goTo();
+		await pubsPage.createPub({
+			values: { title: relatedPubTitle, content: "my content" },
+		});
+
+		const fieldsPage = new FieldsPage(page, COMMUNITY_SLUG);
+		await fieldsPage.goto();
+		// Add a string, string array, and null related field
+		const relatedFields = [
+			{ name: "string", schemaName: CoreSchemaType.String },
+			{ name: "array", schemaName: CoreSchemaType.StringArray },
+			{ name: "null", schemaName: CoreSchemaType.Null },
+		];
+		for (const relatedField of relatedFields) {
+			await fieldsPage.addField(relatedField.name, relatedField.schemaName, true);
+		}
+		// Add these to a new form
+		const formSlug = "relationship-form";
+		const formsPage = new FormsPage(page, COMMUNITY_SLUG);
+		await formsPage.goto();
+		await formsPage.addForm("relationship form", formSlug);
+		const formEditPage = new FormsEditPage(page, COMMUNITY_SLUG, formSlug);
+		await formEditPage.goto();
+
+		// Configure these 3 fields
+		for (const relatedField of relatedFields) {
+			await formEditPage.openAddForm();
+			await formEditPage.openFormElementPanel(`${COMMUNITY_SLUG}:${relatedField.name}`);
+			await page.getByRole("textbox", { name: "Label" }).first().fill(relatedField.name);
+			await formEditPage.saveFormElementConfiguration();
+		}
+
+		// Save the form builder and go to external form
+		await formEditPage.saveForm();
+		await formEditPage.goToExternalForm();
+		for (const element of relatedFields) {
+			await expect(page.getByText(element.name)).toHaveCount(1);
+		}
+
+		// Fill out the form
+		const title = "pub with related fields";
+		await page.getByTestId(`${COMMUNITY_SLUG}:title`).fill(title);
+		await page.getByTestId(`${COMMUNITY_SLUG}:content`).fill("content");
+		// string related field
+		const stringRelated = page.getByTestId("related-pubs-string");
+		await stringRelated.getByRole("button", { name: "Add" }).click();
+		await page
+			.getByRole("button", { name: `Select row ${relatedPubTitle}` })
+			.getByLabel("Select row")
+			.click();
+		await page.getByTestId("add-related-pub-button").click();
+		await expect(stringRelated.getByText(relatedPubTitle)).toHaveCount(1);
+		await stringRelated.getByRole("button", { name: "Add string" }).click();
+		await page.getByTestId(`${COMMUNITY_SLUG}:string.0.value`).fill("admin");
+		// Click the button again to 'exit' the popover
+		await stringRelated.getByRole("button", { name: "Add string" }).click();
+		await expect(stringRelated.getByText("admin")).toHaveCount(1);
+
+		// array related field
+		const arrayRelated = page.getByTestId("related-pubs-array");
+		await arrayRelated.getByRole("button", { name: "Add" }).click();
+		await page
+			.getByRole("button", { name: `Select row ${relatedPubTitle}` })
+			.getByLabel("Select row")
+			.click();
+		await page.getByTestId("add-related-pub-button").click();
+		await expect(arrayRelated.getByText(relatedPubTitle)).toHaveCount(1);
+		await arrayRelated.getByRole("button", { name: "Add array" }).click();
+		const locator = page.getByTestId(`multivalue-input`);
+		/**
+		 * Use 'press' to trigger the ',' keyboard event, which "adds" the value
+		 * Could also use 'Enter', but this seems to trigger submitting the form when run thru playwright
+		 */
+		await locator.fill("one");
+		await locator.press(",");
+		await locator.fill("two");
+		await locator.press(",");
+		// Click the button again to 'exit' the popover
+		await arrayRelated.getByRole("button", { name: "Add array" }).click();
+		await expect(arrayRelated.getByText("one,two")).toHaveCount(1);
+
+		// null related field
+		const nullRelated = page.getByTestId("related-pubs-null");
+		await nullRelated.getByRole("button", { name: "Add" }).click();
+		await page
+			.getByRole("button", { name: `Select row ${relatedPubTitle}` })
+			.getByLabel("Select row")
+			.click();
+		await page.getByTestId("add-related-pub-button").click();
+		await expect(nullRelated.getByText(relatedPubTitle)).toHaveCount(1);
+		// Can't add a value to a null related field
+		await expect(nullRelated.getByTestId("add-related-value")).toHaveCount(0);
+		await page.getByRole("button", { name: "Submit" }).click();
+
+		// Check the pub page to make sure the values we expect are there
+		await page.goto(`/c/${COMMUNITY_SLUG}/pubs`);
+		await page.getByRole("link", { name: title }).click();
+		// Make sure pub details page has loaded before making assertions
+		await page.getByText("Assignee").waitFor();
+		await expect(page.getByText("admin:related pub")).toHaveCount(1);
+		await expect(page.getByText("nullrelated pub")).toHaveCount(1);
+	});
+});