diff --git a/e2e-tests/plot.spec.ts b/e2e-tests/plot.spec.ts
new file mode 100644
index 00000000..882ba107
--- /dev/null
+++ b/e2e-tests/plot.spec.ts
@@ -0,0 +1,109 @@
+/* eslint-disable testing-library/prefer-screen-queries */
+import { test, expect } from '@playwright/test';
+import mockData from '../playwright/mock-data/simpsons/simpsons_data.json';
+import mockAnnotations from '../playwright/mock-data/simpsons/simpsons_annotations.json';
+import mockAltText from '../playwright/mock-data/simpsons/simpsons_alttxt.json';
+
+test.beforeEach(async ({ page }) => {
+  await page.route('*/**/api/**', async (route) => {
+    const url = route.request().url();
+    let json;
+
+    if (url) {
+      if (url.includes('workspaces/Upset%20Examples/tables/simpsons/rows/?limit=9007199254740991')) {
+        json = mockData;
+        await route.fulfill({ json });
+      } else if (url.includes('workspaces/Upset%20Examples/tables/simpsons/annotations/')) {
+        json = mockAnnotations;
+        await route.fulfill({ json });
+      } else if (url.includes('alttxt')) {
+        json = mockAltText;
+        await route.fulfill({ json });
+      } else if (url.includes('workspaces/Upset%20Examples/sessions/table/193/state/')) {
+        await route.fulfill({ status: 200 });
+      } else {
+        await route.continue();
+      }
+    } else {
+      await route.abort();
+    }
+  });
+});
+
+/**
+ * Toggles the advanced scale slider. Must be awaited
+ * @param page page provided to test function
+ */
+async function toggleAdvancedScale(page) {
+  await page.getByText('Size', { exact: true }).click({
+    button: 'right',
+    force: true,
+  });
+  await page.getByRole('menuitem', { name: 'Toggle Advanced Scale' }).click();
+}
+
+/**
+ * Removes a visible set by name. Must be awaited
+ * @param page page provided to test
+ * @param setName name of set
+ */
+async function removeSetByName(page, setName: string) {
+  await page.locator('p').filter({ hasText: new RegExp('^' + setName + '$') }).click({ button: 'right' });
+  await page.getByRole('menuitem', { name: 'Remove Set: ' + setName }).click();
+}
+
+/**
+ * Adds an invisible set by name. Must be awaited
+ * @param page page provided to test
+ * @param setName name of set
+ */
+async function addSetByName(page, setName: string) {
+  await page.getByText(setName, { exact: true }).click({
+    button: 'right'
+  });
+  await page.getByRole('menuitem', { name: 'Add Set: ' + setName }).click();
+}
+
+/**
+ * Asserts that the max value of the size scale is equal to the given max value
+ * @param page page provided to test
+ * @param max max value to assert
+ */
+async function assertSizeScaleMax(page, max: number) {
+  await expect(page.locator('g.details-scale > g > g:last-child > text').nth(1))
+    .toHaveText(new RegExp('^' + max + '$'));
+}
+
+/**
+ * Tests that the size header resizes when sets are added/removed and the advanced scale slider works
+ */
+test('Size header', async ({ page }) => {
+  await page.goto('http://localhost:3000/?workspace=Upset+Examples&table=simpsons&sessionId=193');
+
+  // Ensure that the scale increases when necessary upon set removal
+  await assertSizeScaleMax(page, 3);
+  await removeSetByName(page, 'Blue Hair');
+  await assertSizeScaleMax(page, 5);
+
+  // Ensure that the scale decreases when necessary upon set removal
+  await removeSetByName(page, 'Male');
+  await assertSizeScaleMax(page, 8);
+  
+  // Ensure that the scale updates upon set addition
+  await addSetByName(page, 'Male');
+  await assertSizeScaleMax(page, 5);
+
+  // Ensure that dragging the advanced slider works
+  await toggleAdvancedScale(page);
+  await page.locator('g').filter({ hasText: /^0055101015152020Size001122334455$/ }).locator('rect').nth(1).
+    dragTo(page.getByText('15', { exact: true }).nth(1), {force: true});
+  await assertSizeScaleMax(page, 15);
+
+  // Ensure that adding sets doesn't affect the advanced scale
+  await addSetByName(page, 'Blue Hair');
+  await assertSizeScaleMax(page, 15);
+  
+  // Ensure that scale recalculates correctly when advanced is turned off
+  await toggleAdvancedScale(page);
+  await assertSizeScaleMax(page, 3);
+});
\ No newline at end of file
diff --git a/packages/upset/src/atoms/maxSizeAtom.ts b/packages/upset/src/atoms/maxSizeAtom.ts
index d1d4b70f..1bb0d84a 100644
--- a/packages/upset/src/atoms/maxSizeAtom.ts
+++ b/packages/upset/src/atoms/maxSizeAtom.ts
@@ -1,5 +1,9 @@
 import { atom } from 'recoil';
 
+/**
+ * Max set size; used to set the size scale
+ * Either calculated automatically or manually set by the advanced scale slider
+ */
 export const maxSize = atom({
   key: 'max-size',
   default: -1,
diff --git a/packages/upset/src/components/Header/SizeHeader.tsx b/packages/upset/src/components/Header/SizeHeader.tsx
index 3dab0524..6239653e 100644
--- a/packages/upset/src/components/Header/SizeHeader.tsx
+++ b/packages/upset/src/components/Header/SizeHeader.tsx
@@ -100,15 +100,19 @@ export const SizeHeader: FC = () => {
     );
   };
 
+  /**
+   * Updates the scale of the header based on the largest subset as long as the advanced scale slider hasn't taken
+   * control and set a value 
+   */
   useEffect(() => {
-    if (maxC !== -1) return;
+    if (advancedScale) return;
     const subs = Object.values(subsets.values);
     if (subs.length === 0) return;
 
     const sizes = subs.map((s) => s.size);
     const maxS = Math.max(...sizes);
     setMaxSize(maxS);
-  }, [subsets, maxSize]);
+  }, [subsets, maxSize, advancedScale]);
 
   const globalScale = useScale([0, itemCount], [0, dimensions.attribute.width]);