flutter TextFormField width is zero in production mode

I write a dictionary app and I have a TextFormField on the main page it shows well on my mobile and emulator. when run on other devices the TextFormField width is zero or disappeared.

if you guys are faced with this kind of problem share your experience

What I expect:

What I faced:

home page code:

import 'dart:math';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';
import 'package:sundic/app/modules/home/mylabel.dart';
import 'package:sundic/app/routes/app_pages.dart';
import 'package:sundic/generated/locales.g.dart';
import '../controllers/home_controller.dart';

class HomeView extends GetView<HomeController> {
  const HomeView({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return WillPopScope(
      onWillPop: () async => await _showRatingDialog(context),
      child: Scaffold(
        appBar: AppBar(
          centerTitle: true,
          forceMaterialTransparency: true,
          toolbarHeight: Get.width * .30,
          title: Obx(
            () => controller.isLoaded.value
                ? SizedBox(
                    width: controller.bannerAd!.size.width.toDouble(),
                    height: controller.bannerAd!.size.height.toDouble(),
                    child: AdWidget(ad: controller.bannerAd!),
                  )
                : const SizedBox.shrink(),
          ),
          titleSpacing: 0,
          bottom: PreferredSize(
            preferredSize: const Size.fromHeight(5.0),
            child:

                // Obx(() => searchInput()),

                SizedBox(
              width: Get.size.width,
              height: 50,
              child: Obx(
                () => searchInput(),
              ),
            ),
          ),
        ),
        backgroundColor: Colors.grey.shade100,
        body: Stack(
          children: [
            // WordCloud(texts: controller.mylabels, focusedWord: controller.focusedWord),
            Obx(
              () => Container(
                height: Get.size.height,
                width: Get.size.width,
                margin: const EdgeInsets.only(top: 10),
                child: Container(
                  clipBehavior: Clip.antiAlias,
                  margin: const EdgeInsets.symmetric(horizontal: 15),
                  decoration: BoxDecoration(
                    color: controller.words.isNotEmpty ? Colors.white : Colors.transparent,
                    // borderRadius: const BorderRadius.only(topLeft: Radius.circular(20), topRight: Radius.circular(20)),
                  ),
                  child: ListView.separated(
                    physics: const BouncingScrollPhysics(),
                    padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 0),
                    itemCount: controller.words.length,
                    itemBuilder: (context, index) {
                      return ListTile(
                        onTap: () {
                          FocusScope.of(context).unfocus();
                          Get.toNamed(Routes.DETAILS, arguments: controller.words[index]);
                        },
                        contentPadding: const EdgeInsets.symmetric(horizontal: 10, vertical: 0),
                        title: Text(
                          controller.words[index].word ?? '',
                          textDirection: controller.words[index].wordDirection,
                        ),
                        subtitle: Directionality(
                          textDirection: controller.words[index].meaningDirection,
                          child: Text(
                            controller.words[index].meaning ?? '',
                            style: TextStyle(color: Colors.grey.shade700),
                            maxLines: 2,
                            overflow: TextOverflow.ellipsis,
                          ),
                        ),
                      );
                    },
                    separatorBuilder: (BuildContext context, int index) => const Divider(thickness: 0.5),
                  ),
                ),
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget searchInput() {
    return Container(
      width: Get.size.width,
      height: 50,
      padding: const EdgeInsets.symmetric(horizontal: 15),
      child: IntrinsicWidth(
        stepHeight: Get.size.width,
        child: Container(
          width: double.infinity,
          height: double.infinity,
          decoration: BoxDecoration(
            color: Colors.white,
            borderRadius: BorderRadius.circular(0),
            border: Border.all(color: Colors.grey.shade300),
          ),
          child: TextFormField(
            autofocus: true,
            controller: controller.searchController,
            onTap: () => controller.moved.value = true,
            onChanged: (value) => controller.search(value),
            decoration: InputDecoration(
              hintText: LocaleKeys.search_placeholder.tr,
              border: InputBorder.none,
              suffixIcon: IconButton(
                onPressed: () => Get.toNamed(Routes.BOOKMARKED),
                icon: const Icon(Icons.star),
              ),
              prefixIcon: controller.hiddenButton.value
                  ? const Icon(Icons.search)
                  : IconButton(
                      onPressed: () {
                        controller.hiddenButton.value = true;
                        controller.searchController.clear();
                        controller.words.clear();
                      },
                      icon: const Icon(Icons.close)),
            ),
          ),
        ),
      ),
    );
  }

  Future<bool> _onWillPop() async {
    DateTime now = DateTime.now();
    if (controller.currentBackPressTime == null || now.difference(controller.currentBackPressTime!) > const Duration(seconds: 2)) {
      controller.currentBackPressTime = now;
      ScaffoldMessenger.of(Get.context!).showSnackBar(SnackBar(content: Text(LocaleKeys.press_back_again.tr), duration: const Duration(seconds: 2)));
      controller.reviewApp();
      return Future.value(false);
    }
    return Future.value(true);
  }

  Future<bool> _showRatingDialog(BuildContext context) async {
    bool shouldExit = false;
    await showDialog(
      context: context,
      builder: (context) => AlertDialog(
        title: Text(LocaleKeys.rate_the_app.tr),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Text(LocaleKeys.rate_the_app_description.tr),
            const SizedBox(height: 8),
          ],
        ),
        actionsAlignment: MainAxisAlignment.spaceEvenly,
        actions: [
          ElevatedButton(
            onPressed: () {
              shouldExit = true;
              Navigator.of(context).pop();
              controller.reviewApp();
            },
            child: Text(LocaleKeys.exit.tr),
          ),
          ElevatedButton(
            onPressed: () {
              shouldExit = false;
              Navigator.of(context).pop();
              // You can navigate the user to the Play Store/App Store for rating here
            },
            child: Text(LocaleKeys.rate.tr),
          ),
        ],
      ),
    );

    return shouldExit;
  }
}