Keyboard disappearing when moving the focus to the next TextFormField flutter

Question

This the form where I'm trying to move the focus. All is working fine till the field title, where I want to move it to a textField phone number but in doing so instead of moving the focus the soft keyboard disappears. I tried to attached scrollController to the SingleScrollView and then move it in onSaved in the textfield before this one I want to get focus: controller.singleSclollViewController.jumpTo(controller.singleSclollViewController.position.maxScrollExtent); But it is doing nothing.

This is the complete form with that problem

Form(
                    key: controller.formKey,
                    child: SingleChildScrollView(
                      controller: controller.singleSclollViewController,
                      padding: EdgeInsets.only(
                          bottom: MediaQuery.of(context).viewInsets.bottom),
                      child: Column(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          verticalSpaceMedium,
                          Image.asset(
                            'assets/graphics/data.png',
                          ),
                          Container(
                            padding: EdgeInsets.symmetric(horizontal: 40),
                            child: GetBuilder<HomeController>(
                                builder: (builderController) =>
                                    builderController.isPosition
                                        ? CustomTextField(
                                            autofocus: true,
                                            focusNode:
                                                controller.adressFocusNode,
                                            validate: (text) => controller
                                                .validateTextField(text),
                                            maxline: 4,
                                            minLine: 2,
                                            height: 80.h,
                                            width: 0.8.sw,
                                            controller:
                                                controller.adressController,
                                            color:
                                                AppColors.primaryColorShade,
                                                //adress
                                            lableText: 'адреса',
                                          )
                                        : CircularProgressIndicator()),
                          ),
                          verticalSpaceSmall,
                          Container(
                            padding: EdgeInsets.symmetric(
                              horizontal: 40,
                              vertical: 10,
                            ),
                            child: TypeAheadFormField<City>(
                                validator: (text) {
                                  if (globalController
                                      .doesSuggestionExist) {
                                    //there is no such available city
                                    return 'такого доступного міста немає';
                                  }
                                  return controller
                                      .validateTextField(text ?? '');
                                },
                                textFieldConfiguration:
                                    TextFieldConfiguration(
                                  controller: controller.cityController,
                                  decoration:
                                      outlineInputTextFormFieldStyle!
                                          .copyWith(
                                              label: Text(
                                    //city
                                    'місто',
                                    style: textfieldLableStyle,
                                  )),
                                ),
                                onSuggestionSelected: (City city) {
                                  controller.cityController.text =
                                      city.name;
                                  controller.nameFocusNode.requestFocus();
                                },
                                itemBuilder: (_, City city) {
                                  return ListTile(
                                    leading: Icon(Icons.location_city),
                                    title: Text(
                                      city.name,
                                      style: headingBlackStyle,
                                    ),
                                  );
                                },
                                suggestionsCallback: (pattern) async {
                                  return await globalController
                                      .getSuggestions(pattern, '');
                                }),
                          ),
                          verticalSpaceSmall,
                          OneLineTextField(
                              focusNode: controller.nameFocusNode,
                              onSubmit: () {
                                controller.nameFocusNode.unfocus();
                                controller.titleFocusNode.requestFocus();
                              },
                              keybordhType: TextInputType.name,
                              validator: (text) {
                                return controller
                                    .validateTextField(text ?? '');
                              },
                              //name/"Ім'я та прізвище"
                              lable: "Ім'я та прізвище",
                              maxLenght: 25,
                              controller: controller.nameController),
                          verticalSpaceSmall,
                          OneLineTextField(
                              onSubmit: () {
                                controller.singleSclollViewController
                                    .jumpTo(controller
                                        .singleSclollViewController
                                        .position
                                        .maxScrollExtent);
                                controller.phoneFocusNode.requestFocus();
                              },
                              focusNode: controller.titleFocusNode,
                              maxLenght: 25,
                              keybordhType: TextInputType.name,
                              validator: (text) {
                                return controller
                                    .validateTextField(text ?? '');
                              },
                              //title/"потрібен титул"
                              lable: 'Назва оголошення',
                              controller: controller.titleController),
                          verticalSpaceSmall,
                          OneLineTextField(
                              focusNode: controller.phoneFocusNode,
                              onSubmit: () => controller
                                  .descripotionFocusNode
                                  .requestFocus(),
                              maxLenght: 15,
                              keybordhType: TextInputType.number,
                              validator: (text) {
                                return controller
                                    .validateTextField(text ?? '');
                              },
                              //phone number/ "телефонний номер"
                              lable: 'телефонний номер',
                              controller:
                                  controller.contactNumberController),
                          verticalSpaceSmall,
                          Container(
                            padding: EdgeInsets.symmetric(horizontal: 40),
                            child: CustomTextField(
                              onSubmit: () => controller
                                  .descripotionFocusNode
                                  .unfocus(),
                              focusNode: controller.descripotionFocusNode,
                              maxLenght: 400,
                              validate: (text) =>
                                  controller.validateTextField(text),
                              maxline: 10,
                              minLine: 5,
                              height: 120.h,
                              width: 0.8.sw,
                              controller: controller.descriptionController,
                              color: AppColors.primaryColorShade,
                              //description
                              lableText: 'опис',
                            ),
                          ),
                        ],
                      ),
                    ),
                  ),