Localization also works already without reference to null semantic type, here...

Localization also works already without reference to null semantic type, here is test to memorialize this (#16641)

It works, here's a test for it

frontend/test/metabase/scenarios/admin/settings/localization.cy.spec.js

@@ -3,7 +3,7 @@ import { SAMPLE_DATASET } from "__support__/e2e/cypress_sample_dataset";
 
 const { ORDERS, ORDERS_ID } = SAMPLE_DATASET;
 
-describe("scenarios > admin > permissions", () => {
+describe("scenarios > admin > localization", () => {
   beforeEach(() => {
     restore();
     cy.signInAsAdmin();

frontend/test/metabase/scenarios/admin/settings/settings.cy.spec.js

@@ -4,6 +4,9 @@ import {
   version,
   popover,
 } from "__support__/e2e/cypress";
+import { SAMPLE_DATASET } from "__support__/e2e/cypress_sample_dataset";
+
+const { ORDERS } = SAMPLE_DATASET;
 
 describe("scenarios > admin > settings", () => {
   beforeEach(() => {
@@ -179,6 +182,29 @@ describe("scenarios > admin > settings", () => {
     cy.contains(/^February 11, 2019, 9:40 PM$/);
   });
 
+  it("should correctly apply the globalized date formats (metabase#11394)", () => {
+    cy.server();
+    cy.route("PUT", "**/custom-formatting").as("saveFormatting");
+
+    cy.request("PUT", `/api/field/${ORDERS.CREATED_AT}`, {
+      semantic_type: null,
+    });
+
+    cy.visit("/admin/settings/localization");
+
+    cy.contains("Date style")
+      .closest("li")
+      .find(".AdminSelect")
+      .first()
+      .click();
+    cy.findByText("2018/1/7").click();
+    cy.contains("17:24 (24-hour clock)").click();
+    cy.wait("@saveFormatting");
+
+    openOrdersTable();
+    cy.contains(/^2019\/2\/11, 21:40$/);
+  });
+
   it("should search for and select a new timezone", () => {
     cy.server();
     cy.route("PUT", "**/report-timezone").as("reportTimezone");