Fix: Revert #26931 change due to new bug it introduced

change/@fluentui-react-c04deae4-a13e-45a0-8a98-b7c3f4ca4a5b.json

@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "Fix: Fix issue with ComboBox not accepting IME input in allowFreeform (revert PR #26931)",
+  "packageName": "@fluentui/react",
+  "email": "[email protected]",
+  "dependentChangeType": "patch"
+}

packages/react/src/components/Autofill/Autofill.tsx

@@ -326,16 +326,12 @@ export class Autofill extends React.Component<IAutofillProps, IAutofillState> im
     }
 
     // eslint-disable-next-line deprecation/deprecation
-    const { onInputChange, onInputValueChange, updateValueInWillReceiveProps } = this.props;
+    const { onInputChange, onInputValueChange } = this.props;
     if (onInputChange) {
       newValue = onInputChange?.(newValue, composing) || '';
     }
 
-    // if value is controlled in updateValueInWillReceiveProps, then we should not update the value in state now
-    // https://github.com/microsoft/fluentui/issues/18499
-    updateValueInWillReceiveProps
-      ? onInputValueChange?.(newValue, composing)
-      : this.setState({ inputValue: newValue }, () => onInputValueChange?.(newValue, composing));
+    this.setState({ inputValue: newValue }, () => onInputValueChange?.(newValue, composing));
   };
 
   private _getDisplayValue(): string {