diff --git a/assets/js/src/core/components/many-to-many-relation/hooks/use-value.test.ts b/assets/js/src/core/components/many-to-many-relation/hooks/use-value.test.ts
new file mode 100644
index 0000000000..6ab16e7dc6
--- /dev/null
+++ b/assets/js/src/core/components/many-to-many-relation/hooks/use-value.test.ts
@@ -0,0 +1,102 @@
+/**
+ * This source file is available under the terms of the
+ * Pimcore Open Core License (POCL)
+ * Full copyright and license information is available in
+ * LICENSE.md which is distributed with this source code.
+ *
+ *  @copyright  Copyright (c) Pimcore GmbH (https://www.pimcore.com)
+ *  @license    Pimcore Open Core License (POCL)
+ */
+
+import { renderHook } from '@testing-library/react'
+import { useValue, type DisplayManyToManyRelationValue, type ManyToManyRelationValue } from './use-value'
+
+// Isolate the hook from its data/UI dependencies; the search path taken here is
+// synchronous (no valid pathFormatterConfig), so formatPath is never invoked.
+jest.mock('@Pimcore/modules/data-object/hooks/use-data-object', () => ({
+  useDataObject: () => ({ id: 1 })
+}))
+jest.mock('@Pimcore/modules/data-object/hooks/use-format-path', () => ({
+  useFormatPath: () => ({ formatPath: jest.fn(), hasUncachedItems: () => false })
+}))
+jest.mock('@Pimcore/components/modal/alert-modal/hooks/use-alert-modal', () => ({
+  useAlertModal: () => ({ warn: jest.fn() })
+}))
+jest.mock('react-i18next', () => ({
+  useTranslation: () => ({ t: (key: string) => key })
+}))
+jest.mock('../utils/path-formatter', () => ({
+  isValidPathFormatterConfig: () => false
+}))
+
+describe('useValue search filter', () => {
+  const value: ManyToManyRelationValue = [
+    { id: 1, type: 'object', subtype: 'Institut', fullPath: '/institute/first', isPublished: true },
+    { id: 2, type: 'object', subtype: 'Institut', fullPath: '/institute/second', isPublished: true }
+  ]
+
+  const renderUseValue = (
+    visibleFieldsValue?: Array<Record<string, any> | undefined>
+  ): { setDisplayedValue: jest.Mock, onSearch: (term: string) => void } => {
+    const setDisplayedValue = jest.fn()
+    const { result } = renderHook(() =>
+      useValue(
+        value,
+        jest.fn(),
+        value as DisplayManyToManyRelationValue,
+        setDisplayedValue,
+        null,
+        false,
+        undefined,
+        visibleFieldsValue
+      )
+    )
+    return { setDisplayedValue, onSearch: result.current.onSearch }
+  }
+
+  // onSearch mutates a ref and calls the (mocked) setDisplayedValue synchronously
+  // with no valid pathFormatterConfig, so no React state update needs flushing.
+  const search = (onSearch: (term: string) => void, term: string): void => {
+    onSearch(term)
+  }
+
+  const displayedAfterSearch = (setDisplayedValue: jest.Mock): DisplayManyToManyRelationValue =>
+    (setDisplayedValue.mock.calls.at(-1)?.[0] ?? []) as DisplayManyToManyRelationValue
+
+  it('matches a visible column value only reachable via the row id', () => {
+    // Entries carry the row id, as the producer now emits them.
+    const { setDisplayedValue, onSearch } = renderUseValue([
+      { id: 1, bankname: 'Sparkasse Musterstadt' },
+      { id: 2, bankname: 'Volksbank Beispiel' }
+    ])
+
+    search(onSearch, 'sparkasse')
+
+    // 'sparkasse' appears only in a column value, never in a fullPath.
+    expect(displayedAfterSearch(setDisplayedValue).map((item) => item.id)).toEqual([1])
+  })
+
+  it('cannot match a column value when entries lack the row id (regression)', () => {
+    // Without an id the join drops the entry, so column search is unreachable and
+    // the filter falls back to the fullPath only — the bug this fix addresses.
+    const { setDisplayedValue, onSearch } = renderUseValue([
+      { bankname: 'Sparkasse Musterstadt' },
+      { bankname: 'Volksbank Beispiel' }
+    ])
+
+    search(onSearch, 'sparkasse')
+
+    expect(displayedAfterSearch(setDisplayedValue)).toEqual([])
+  })
+
+  it('still matches the object fullPath (fallback intact)', () => {
+    const { setDisplayedValue, onSearch } = renderUseValue([
+      { id: 1, bankname: 'Sparkasse Musterstadt' },
+      { id: 2, bankname: 'Volksbank Beispiel' }
+    ])
+
+    search(onSearch, 'second')
+
+    expect(displayedAfterSearch(setDisplayedValue).map((item) => item.id)).toEqual([2])
+  })
+})
diff --git a/assets/js/src/core/modules/element/dynamic-types/definitions/objects/data-related/components/many-to-many-object-relation/many-to-many-object-relation.tsx b/assets/js/src/core/modules/element/dynamic-types/definitions/objects/data-related/components/many-to-many-object-relation/many-to-many-object-relation.tsx
index f3742b3cc8..d535618007 100644
--- a/assets/js/src/core/modules/element/dynamic-types/definitions/objects/data-related/components/many-to-many-object-relation/many-to-many-object-relation.tsx
+++ b/assets/js/src/core/modules/element/dynamic-types/definitions/objects/data-related/components/many-to-many-object-relation/many-to-many-object-relation.tsx
@@ -216,10 +216,15 @@ const ManyToManyObjectRelationInner = (props: ManyToManyObjectRelationProps): Re
 
   const visibleFieldsValue = useMemo(() => {
     return mergedGridFullData.map(item => {
-      return item?.columns?.reduce<Record<string, any>>((acc, col) => {
+      const columns = item?.columns?.reduce<Record<string, any>>((acc, col) => {
         acc[col.key!] = col.value
         return acc
       }, {})
+
+      // applySearchFilter joins a grid row to its visible-field values by id: it
+      // builds a Map keyed by field.id and drops entries with a nil id. Without
+      // the id here the lookup misses and search silently falls back to fullPath.
+      return isUndefined(columns) ? undefined : { ...columns, id: item.id }
     })
   }, [mergedGridFullData])