diff --git a/.changeset/task-shadowed-field-group.md b/.changeset/task-shadowed-field-group.md
new file mode 100644
index 00000000..1c04a759
--- /dev/null
+++ b/.changeset/task-shadowed-field-group.md
@@ -0,0 +1,10 @@
+---
+'hotcrm': patch
+---
+
+Drop the shadowed `assignment` field group on `crm_task`. #577 added the group
+with `owner` as its only member, but the synthesized detail page hoists `owner`
+into the highlight strip, so the group rendered on forms and never on detail
+pages (`field-group-shadowed`). `owner` moves to `basic`, next to
+subject/status/priority. Clears the warning #577 introduced; validate goes from
+5 warnings to 4.
diff --git a/src/objects/task.object.ts b/src/objects/task.object.ts
index 9ed9a670..da1ebc3f 100644
--- a/src/objects/task.object.ts
+++ b/src/objects/task.object.ts
@@ -23,7 +23,10 @@ export const Task = ObjectSchema.create({
   fieldGroups: [
     { key: 'basic',      label: 'Task Information', icon: 'info' },
     { key: 'scheduling', label: 'Scheduling',       icon: 'calendar' },
-    { key: 'assignment', label: 'Assignment',       icon: 'user' },
+    // No 'assignment' group: `owner` was its only member, and the synthesized
+    // detail page hoists `owner` into the highlight strip — so the group
+    // rendered on forms and never on detail pages (`field-group-shadowed`).
+    // It lives in `basic` alongside subject/status/priority instead.
     { key: 'related',    label: 'Related Records',  icon: 'link' },
     { key: 'recurrence', label: 'Recurrence',       icon: 'refresh-ccw', defaultExpanded: false },
     { key: 'effort',     label: 'Progress & Effort', icon: 'activity',   defaultExpanded: false },
@@ -123,7 +126,7 @@ export const Task = ObjectSchema.create({
     
     // Assignment
     owner: Field.lookup('sys_user', {
-      group: 'assignment',
+      group: 'basic',
       defaultValue: cel`os.user.id`,
       label: 'Assigned To',
       trackHistory: true,