diff --git a/test/EleventyTest-Shortcodes.js b/test/EleventyTest-Shortcodes.js
new file mode 100644
index 000000000..6e610991f
--- /dev/null
+++ b/test/EleventyTest-Shortcodes.js
@@ -0,0 +1,22 @@
+import test from "ava";
+import Eleventy from "../src/Eleventy.js";
+
+test.skip("#3400: Both a paired and unpaired shortcode.", async (t) => {
+  let count = 0;
+  let elev = new Eleventy("./test/stubs-virtual/", undefined, {
+    config: function(eleventyConfig) {
+      eleventyConfig.addShortcode("single", function() {
+        count++;
+      });
+      eleventyConfig.addPairedShortcode("single", function() {
+        count++;
+      });
+
+      eleventyConfig.addTemplate("test.njk", `{% single %}
+{% single %}{% endsingle %}`, {});
+    }
+  });
+
+  let results = await elev.toJSON();
+  t.is(count, 2);
+});