diff --git a/.github/workflows/test-shard-template.yml b/.github/workflows/test-shard-template.yml
index 185764c86a8..eab9d263ce6 100644
--- a/.github/workflows/test-shard-template.yml
+++ b/.github/workflows/test-shard-template.yml
@@ -29,4 +29,4 @@ jobs:
       - name: Install Node.js dependencies
         run: npm ci
       - name: Run tests
-        run: npx vitest --project ${{ inputs.project }} --shard=${{ inputs.shard }}/${{ inputs.totalShards }} ${{ !runner.debug && '--silent' || '' }}
+        run: npx vitest --project ${{ inputs.project }} --shard=${{ inputs.shard }}/${{ inputs.totalShards }} --no-isolate ${{ !runner.debug && '--silent' || '' }}
diff --git a/package.json b/package.json
index 4a0a8b9e163..d1f3a2b5512 100644
--- a/package.json
+++ b/package.json
@@ -9,10 +9,10 @@
 		"build": "vite build",
 		"build:beta": "vite build --mode beta",
 		"preview": "vite preview",
-		"test": "vitest run --project pre && vitest run --project main",
+		"test": "vitest run --project pre && vitest run --project main --no-isolate",
 		"test:cov": "vitest run --project pre && vitest run --project main --coverage",
 		"test:watch": "vitest run --project pre && vitest watch --project main --coverage",
-		"test:silent": "vitest run --project pre && vitest run --project main --silent",
+		"test:silent": "vitest run --project pre && vitest run --project main --silent --no-isolate",
 		"typecheck": "tsc --noEmit",
 		"eslint": "eslint --fix .",
 		"eslint-ci": "eslint .",