diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/search.js b/packages/node_modules/@node-red/editor-client/src/js/ui/search.js
index 4ddab7419..d57f05c3a 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/search.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/search.js
@@ -49,9 +49,13 @@ RED.search = (function() {
     function indexNode(n) {
         var l = RED.utils.getNodeLabel(n);
         if (l) {
-            l = (""+l).toLowerCase();
-            index[l] = index[l] || {};
-            index[l][n.id] = {node:n,label:l}
+            const originalLabel = "" + l;
+            const indexLabel = originalLabel.toLowerCase();
+            index[indexLabel] = index[indexLabel] || {};
+            index[indexLabel][n.id] = {
+                node: n,
+                label: originalLabel
+            };
         }
         l = l||n.label||n.name||n.id||"";
 
@@ -683,7 +687,17 @@ RED.search = (function() {
         show: show,
         hide: hide,
         search: search,
-        getSearchOptions: getSearchOptions
+        getSearchOptions: getSearchOptions,
+        // Expose internals for testing
+        _indexNode: indexNode,
+        get _index() { return index; },
+        set _index(val) { index = val; }
     };
 
 })();
+
+
+// Allow CommonJS import for testing
+if (typeof module !== "undefined" && module.exports) {
+    module.exports = RED.search;
+}
diff --git a/test/unit/@node-red/editor-client/ui/search_spec.js b/test/unit/@node-red/editor-client/ui/search_spec.js
new file mode 100644
index 000000000..098810b3c
--- /dev/null
+++ b/test/unit/@node-red/editor-client/ui/search_spec.js
@@ -0,0 +1,162 @@
+const should = require("should");
+const sinon = require("sinon");
+
+const NR_TEST_UTILS = require("nr-test-utils");
+
+// Path to the search.js module
+const searchModulePath = NR_TEST_UTILS.resolve("@node-red/editor-client/src/js/ui/search.js");
+
+describe("editor-client/ui/search", function() {
+    let search;
+    let mockRED;
+
+    beforeEach(function() {
+        // Set up minimal RED global mock - only what's needed for tests
+        mockRED = {
+            utils: {
+                getNodeLabel: sinon.stub()
+            }
+        };
+        global.RED = mockRED;
+
+        // Clear require cache to get fresh module instance
+        delete require.cache[searchModulePath];
+        search = require(searchModulePath);
+
+        // Reset the index for each test
+        search._index = {};
+    });
+
+    afterEach(function() {
+        sinon.restore();
+        delete global.RED;
+        delete require.cache[searchModulePath];
+    });
+
+    describe("indexNode", function() {
+        it("preserves original label casing in search results", function() {
+            const node = {
+                id: "node1",
+                type: "tab",
+                _def: { category: "config" }
+            };
+            mockRED.utils.getNodeLabel.returns("MyFlow Name");
+
+            search._indexNode(node);
+
+            // Verify the index key is lowercase (for case-insensitive searching)
+            should.exist(search._index["myflow name"]);
+
+            // Verify the stored label preserves original casing
+            search._index["myflow name"]["node1"].label.should.equal("MyFlow Name");
+        });
+
+        it("indexes node with mixed case label correctly", function() {
+            const node = {
+                id: "node2",
+                type: "subflow",
+                _def: { category: "subflows" }
+            };
+            mockRED.utils.getNodeLabel.returns("MySubFlow_Test");
+
+            search._indexNode(node);
+
+            // Index key should be lowercase
+            should.exist(search._index["mysubflow_test"]);
+
+            // Label should preserve original casing
+            search._index["mysubflow_test"]["node2"].label.should.equal("MySubFlow_Test");
+        });
+
+        it("handles uppercase labels", function() {
+            const node = {
+                id: "node3",
+                type: "tab",
+                _def: { category: "config" }
+            };
+            mockRED.utils.getNodeLabel.returns("UPPERCASE FLOW");
+
+            search._indexNode(node);
+
+            should.exist(search._index["uppercase flow"]);
+            search._index["uppercase flow"]["node3"].label.should.equal("UPPERCASE FLOW");
+        });
+
+        it("handles lowercase labels", function() {
+            const node = {
+                id: "node4",
+                type: "tab",
+                _def: { category: "config" }
+            };
+            mockRED.utils.getNodeLabel.returns("lowercase flow");
+
+            search._indexNode(node);
+
+            should.exist(search._index["lowercase flow"]);
+            search._index["lowercase flow"]["node4"].label.should.equal("lowercase flow");
+        });
+
+        it("stores node reference correctly", function() {
+            const node = {
+                id: "node5",
+                type: "tab",
+                _def: { category: "config" }
+            };
+            mockRED.utils.getNodeLabel.returns("Test Flow");
+
+            search._indexNode(node);
+
+            search._index["test flow"]["node5"].node.should.equal(node);
+        });
+
+        it("handles nodes without labels by falling back to id", function() {
+            const node = {
+                id: "node6",
+                type: "tab",
+                _def: { category: "config" }
+            };
+            mockRED.utils.getNodeLabel.returns(null);
+
+            search._indexNode(node);
+
+            // When there's no label from getNodeLabel,
+            // the node is still indexed by its id
+            should.exist(search._index["node6"]);
+            search._index["node6"]["node6"].label.should.equal("node6");
+        });
+    });
+
+    describe("search", function() {
+        it("finds nodes with case-insensitive search", function() {
+            // Manually set up index with mixed case labels
+            search._index = {
+                "myflow": {
+                    "node1": {
+                        node: { id: "node1", type: "tab", _def: { category: "config" } },
+                        label: "MyFlow"
+                    }
+                }
+            };
+
+            // Search with lowercase should find the node
+            const results = search.search("myflow");
+            results.length.should.equal(1);
+            results[0].label.should.equal("MyFlow");
+        });
+
+        it("returns preserved casing in search results", function() {
+            search._index = {
+                "test subflow": {
+                    "node1": {
+                        node: { id: "node1", type: "subflow", _def: { category: "subflows" } },
+                        label: "Test SubFlow"
+                    }
+                }
+            };
+
+            const results = search.search("test");
+            results.length.should.equal(1);
+            results[0].label.should.equal("Test SubFlow");
+        });
+    });
+});