diff --git a/src/__testing__/UserSearchFieldInput.test.tsx b/src/__testing__/UserSearchFieldInput.test.tsx
new file mode 100644
index 000000000..f6e421caa
--- /dev/null
+++ b/src/__testing__/UserSearchFieldInput.test.tsx
@@ -0,0 +1,68 @@
+import { fireEvent, render, screen, waitFor } from '@testing-library/react';
+import React from 'react';
+import UserSearchField from '../custom/UserSearchField/UserSearchFieldInput';
+import { SistentThemeProvider } from '../theme';
+
+// Regression guard for the user-picker type-ahead.
+//
+// The picker is a controlled MUI Autocomplete. In MUI v9 the `renderInput`
+// params expose the native <input> wiring (value, onChange, onKeyDown, focus
+// handlers and the anchor ref from `getInputProps`) under
+// `params.slotProps.htmlInput`. If the TextField is handed an explicit
+// `slotProps` object that omits `htmlInput`, that object REPLACES the one
+// spread from `{...params}` and the input is silently disconnected from the
+// Autocomplete: keystrokes no longer reach `onInputChange`, the search never
+// fires and the suggestion list never opens. These tests assert the wiring
+// survives so the type-ahead keeps working.
+
+type FieldProps = React.ComponentProps<typeof UserSearchField>;
+
+const renderWithTheme = (ui: React.ReactElement) =>
+  render(<SistentThemeProvider>{ui}</SistentThemeProvider>);
+
+const jane = {
+  userId: 'u-jane',
+  firstName: 'Jane',
+  lastName: 'Doe',
+  email: 'jane@example.com'
+};
+
+const renderField = (overrides: Partial<FieldProps> = {}) => {
+  const props: FieldProps = {
+    usersData: [],
+    setUsersData: jest.fn(),
+    currentUserData: null,
+    searchedUsers: [jane],
+    isUserSearchLoading: false,
+    fetchSearchedUsers: jest.fn(),
+    usersSearch: '',
+    setUsersSearch: jest.fn(),
+    ...overrides
+  };
+  const utils = renderWithTheme(<UserSearchField {...props} />);
+  const input = screen.getByRole('combobox') as HTMLInputElement;
+  return { props, input, ...utils };
+};
+
+describe('UserSearchField type-ahead wiring', () => {
+  it('forwards keystrokes to the search callback', () => {
+    const { props, input } = renderField();
+
+    fireEvent.change(input, { target: { value: 'jane' } });
+
+    // Only reachable when the Autocomplete's htmlInput slot is forwarded to
+    // the TextField; a dropped slot leaves the input inert and this stays 0.
+    expect(props.fetchSearchedUsers).toHaveBeenCalledWith('jane');
+  });
+
+  it('opens the suggestion list with matching users as the query is typed', async () => {
+    const { input } = renderField({ usersSearch: 'jane' });
+
+    fireEvent.change(input, { target: { value: 'jane' } });
+
+    await waitFor(() => {
+      expect(screen.queryByText('jane@example.com')).not.toBeNull();
+    });
+    expect(screen.queryByText('Jane Doe')).not.toBeNull();
+  });
+});
diff --git a/src/custom/DashboardWidgets/GettingStartedWidget/TeamSearchField.tsx b/src/custom/DashboardWidgets/GettingStartedWidget/TeamSearchField.tsx
index 7a1b8d1fd..5517a4b74 100644
--- a/src/custom/DashboardWidgets/GettingStartedWidget/TeamSearchField.tsx
+++ b/src/custom/DashboardWidgets/GettingStartedWidget/TeamSearchField.tsx
@@ -147,6 +147,7 @@ const TeamSearchField: React.FC<TeamSearchFieldProps> = ({
             helperText={error ? 'Team Already Selected' : ''}
             fullWidth
             slotProps={{
+              ...params.slotProps,
               input: {
                 ...params.slotProps?.input,
                 endAdornment: isLoading ? <CircularProgress color="inherit" size={20} /> : null
diff --git a/src/custom/InputSearchField/InputSearchField.tsx b/src/custom/InputSearchField/InputSearchField.tsx
index 0ab226111..7fa941688 100644
--- a/src/custom/InputSearchField/InputSearchField.tsx
+++ b/src/custom/InputSearchField/InputSearchField.tsx
@@ -128,7 +128,9 @@ const InputSearchField: React.FC<InputSearchFieldProps> = ({
             helperText={error}
             fullWidth
             slotProps={{
+              ...params.slotProps,
               inputLabel: {
+                ...params.slotProps?.inputLabel,
                 style: {
                   fontFamily: 'inherit'
                 }
diff --git a/src/custom/UserSearchField/UserSearchField.tsx b/src/custom/UserSearchField/UserSearchField.tsx
index d74f50144..c9215b369 100644
--- a/src/custom/UserSearchField/UserSearchField.tsx
+++ b/src/custom/UserSearchField/UserSearchField.tsx
@@ -156,12 +156,11 @@ const UserShareSearch: React.FC<UserSearchFieldProps> = ({
                 }
               }}
               slotProps={{
+                ...params.slotProps,
                 input: {
                   ...params.slotProps?.input,
                   endAdornment: (
-                    <>
-                      {searchUserLoading ? <CircularProgress color="inherit" size={20} /> : null}
-                    </>
+                    <>{searchUserLoading ? <CircularProgress color="inherit" size={20} /> : null}</>
                   )
                 }
               }}
diff --git a/src/custom/UserSearchField/UserSearchFieldInput.tsx b/src/custom/UserSearchField/UserSearchFieldInput.tsx
index f229345e7..c0858afbb 100644
--- a/src/custom/UserSearchField/UserSearchFieldInput.tsx
+++ b/src/custom/UserSearchField/UserSearchFieldInput.tsx
@@ -183,7 +183,9 @@ const UserSearchField: React.FC<UserSearchFieldProps> = ({
             error={!!error}
             helperText={error}
             slotProps={{
+              ...params.slotProps,
               inputLabel: {
+                ...params.slotProps?.inputLabel,
                 style: {
                   fontFamily: 'inherit'
                 }