How to disable AUTO SUGGESTION in a Textfield in Flutter and other problems with KEYBOARDTYPE in IOS

Question

Am working on a vocabulary learning app (from English to French and vice versa). When doing quizzes, I would prefer it if user didn't have suggestions on the suggestion bar (as it helps with spelling). I tried disabling options in the textfield, but nothing works. Here is the code :

Container(
           padding: const EdgeInsets.all(8),
            child: TextFormField(
              smartQuotesType: SmartQuotesType.disabled,
              autofocus: true,
              enableSuggestions: false,
              autocorrect: false,
              controller: fieldText,
              
              keyboardType:
                  TextInputType.visiblePassword,
              enabled: pasfini,
              enableInteractiveSelection: false,
              autovalidateMode:
                  AutovalidateMode.disabled,
              decoration: InputDecoration(
                  border: OutlineInputBorder(
                    borderRadius:
                        BorderRadius.circular(10.0),
                  ),
                  labelText: 'Ecris la traduction'),
              onChanged: (value) {
                word = value;
              },
              onTap: () {
                setState(() {
                  exoEnCours = true;
                });
              },
            ),
          ),

The only thing that seems to work is if I set keyboardType to email address... But in that case the space bar becomes very small and the @ sign appears...

I don't understand why the enableSuggestions : false and autocorrect : false do not work. It is specified in the API documentation that for IOS : AUTOCORRECT should be set to false for this to be disabled.

Do you know if there's a flutter bug ?

I tried to debug the same code on an ANDROID DEVICE, and it worked fine. There seems to be a problem with IOS....

I have the same problem with another option of the TEXTFIELD widget : the one linked with CAPITALIZATION.

TextFormField(
                    style: TextStyle(
                        fontSize: uD.device == Device.smallMobile
                            ? uD.smallFont2
                            : uD.mediumFont2),
                    initialValue: name,
                    keyboardType: TextInputType.name,
                    textCapitalization: TextCapitalization.words,
                    autocorrect: false,
                    enableSuggestions: false,
                    decoration: kTextFormFieldDecoration.copyWith(
                      labelText: 'Nom du responsable légal',
                    ),

It never capitalizes the first letter of the fieldText. It works fine on Android.