diff --git a/frontend/tests/e2e/pages/AdminInventory.ts b/frontend/tests/e2e/pages/AdminInventory.ts
index 6325a83..0410b80 100644
--- a/frontend/tests/e2e/pages/AdminInventory.ts
+++ b/frontend/tests/e2e/pages/AdminInventory.ts
@@ -27,7 +27,12 @@ export class AdminInventory {
     this.price = page.getByLabel('Price (USD)');
     this.category = page.getByLabel('Category', { exact: true });
     this.saveButton = page.getByRole('button', { name: 'Save', exact: true });
-    this.confirmButton = page.getByRole('button', { name: 'OK' });
+    // exact, because Playwright matches an accessible name case-insensitively
+    // as a *substring* by default. Item names carry a random base36 suffix, and
+    // one containing "ok" — plus any leftover toast still on screen, such as
+    // "Freed rmtiq9okg22k9e" — makes this resolve to two buttons and fail as a
+    // strict mode violation. See #253.
+    this.confirmButton = page.getByRole('button', { name: 'OK', exact: true });
     this.formDialog = page.getByRole('dialog');
     this.tagPicker = page.getByText('Pick existing tags');
   }
diff --git a/frontend/tests/e2e/pages/AdminTaxonomy.ts b/frontend/tests/e2e/pages/AdminTaxonomy.ts
index d729ac4..5f60a78 100644
--- a/frontend/tests/e2e/pages/AdminTaxonomy.ts
+++ b/frontend/tests/e2e/pages/AdminTaxonomy.ts
@@ -21,7 +21,8 @@ export class AdminTaxonomy {
     this.addCategoryButton = page.getByRole('button', { name: 'Add Category' });
     this.addTagButton = page.getByRole('button', { name: 'Add Tag' });
     this.name = page.getByLabel('Name');
-    this.confirmButton = page.getByRole('button', { name: 'OK' });
+    // Substring matching would collide with random suffixes. See #253.
+    this.confirmButton = page.getByRole('button', { name: 'OK', exact: true });
     this.tagAddedNotice = page.getByText('Tag added');
   }
 
diff --git a/frontend/tests/e2e/sold-filter.spec.ts b/frontend/tests/e2e/sold-filter.spec.ts
index 16b1a88..c6959a3 100644
--- a/frontend/tests/e2e/sold-filter.spec.ts
+++ b/frontend/tests/e2e/sold-filter.spec.ts
@@ -59,7 +59,8 @@ test.describe('Filtering the storefront by availability', () => {
     await page.reload();
 
     await expect(storefront.gridCell(NAMES.sold)).toBeVisible();
-    await expect(page.getByRole('radio', { name: 'All' })).toBeChecked();
+    // exact: 'All' is short enough to appear inside other labels. See #253.
+    await expect(page.getByRole('radio', { name: 'All', exact: true })).toBeChecked();
   });
 
   // Not sold is the default, so it is held as "no preference" rather than as an