From 7ec718218e8205abdcaaac68878a7f7a94973919 Mon Sep 17 00:00:00 2001
From: Elian Doran <contact@eliandoran.me>
Date: Mon, 23 Feb 2026 18:45:20 +0200
Subject: [PATCH] fix(hidden_subtree): attribute of wrong type (relation vs
 label) causing issues

---
 apps/server/src/services/hidden_subtree.spec.ts | 11 +++++++++++
 apps/server/src/services/hidden_subtree.ts      |  6 ++++--
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/apps/server/src/services/hidden_subtree.spec.ts b/apps/server/src/services/hidden_subtree.spec.ts
index 3596c54b27..dd3939155b 100644
--- a/apps/server/src/services/hidden_subtree.spec.ts
+++ b/apps/server/src/services/hidden_subtree.spec.ts
@@ -192,5 +192,16 @@ describe("Hidden Subtree", () => {
             llmNote = becca.getNote(noteId);
             expect(llmNote).toBeFalsy();
         });
+
+        it("fixes attribute of wrong type", () => {
+            const template = becca.getNoteOrThrow("_template_table");
+            cls.init(() => {
+                template.setAttribute("relation", "template", "root");
+                hiddenSubtreeService.checkHiddenSubtree();
+            });
+            const attr = template.getAttributes().find(a => a.name === "template");
+            expect(attr).toBeDefined();
+            expect(attr?.type).toBe("label");
+        });
     });
 });
diff --git a/apps/server/src/services/hidden_subtree.ts b/apps/server/src/services/hidden_subtree.ts
index 96ae485af6..37863b3282 100644
--- a/apps/server/src/services/hidden_subtree.ts
+++ b/apps/server/src/services/hidden_subtree.ts
@@ -467,8 +467,10 @@ function checkHiddenSubtreeRecursively(parentNoteId: string, item: HiddenSubtree
             }
 
             // Ensure value is consistent.
-            if (attribute.value !== attrDef.value) {
-                note.setAttributeValueById(attribute.attributeId, attrDef.value);
+            if (attribute.value !== attrDef.value || attribute.type !== attrDef.type) {
+                attribute.type = attrDef.type;
+                attribute.value = attrDef.value ?? "";
+                attribute.save();
             }
         }
     }