Use the "old" method to set the default value instead the ?: operator

Modules/Setting/Resources/views/admin/fields/plain/number.blade.php

@@ -4,6 +4,6 @@
     <?php if (isset($dbSettings[$settingName]) && $dbSettings[$settingName]->plainValue !== null): ?>
         {!! Form::number($settingName, old($settingName, $dbSettings[$settingName]->plainValue) ?: $defaultValue, ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php else: ?>
-        {!! Form::number($settingName, old($settingName) ?: $defaultValue, ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
+        {!! Form::number($settingName, old($settingName, $defaultValue), ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php endif; ?>
 </div>

Modules/Setting/Resources/views/admin/fields/plain/text.blade.php

@@ -4,6 +4,6 @@
     <?php if (isset($dbSettings[$settingName]) && $dbSettings[$settingName]->plainValue !== null): ?>
         {!! Form::text($settingName, old($settingName, $dbSettings[$settingName]->plainValue) ?: $defaultValue, ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php else: ?>
-        {!! Form::text($settingName, old($settingName) ?: $defaultValue, ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
+        {!! Form::text($settingName, old($settingName, $defaultValue), ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php endif; ?>
 </div>

Modules/Setting/Resources/views/admin/fields/plain/textarea.blade.php

@@ -4,6 +4,6 @@
     <?php if (isset($dbSettings[$settingName]) && $dbSettings[$settingName]->plainValue !== null): ?>
         {!! Form::textarea($settingName, old($settingName, $dbSettings[$settingName]->plainValue) ?: $defaultValue, ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php else: ?>
-        {!! Form::textarea($settingName, old($settingName) ?: $defaultValue, ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
+        {!! Form::textarea($settingName, old($settingName, $defaultValue), ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php endif; ?>
 </div>

Modules/Setting/Resources/views/admin/fields/translatable/number.blade.php

@@ -5,6 +5,6 @@
         <?php $value = $dbSettings[$settingName]->hasTranslation($lang) ? $dbSettings[$settingName]->translate($lang)->value : $defaultValue; ?>
         {!! Form::number($settingName . "[$lang]", old($settingName . "[$lang]", $value), ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php else: ?>
-        {!! Form::number($settingName . "[$lang]", old($settingName . "[$lang]") ?: $defaultValue, ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
+        {!! Form::number($settingName . "[$lang]", old($settingName . "[$lang]", $defaultValue), ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php endif; ?>
 </div>

Modules/Setting/Resources/views/admin/fields/translatable/text.blade.php

@@ -5,6 +5,6 @@
         <?php $value = $dbSettings[$settingName]->hasTranslation($lang) ? $dbSettings[$settingName]->translate($lang)->value : ''; ?>
         {!! Form::text($settingName . "[$lang]", old($settingName . "[$lang]", $value) ?: $defaultValue, ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php else: ?>
-        {!! Form::text($settingName . "[$lang]", old($settingName . "[$lang]") ?: $defaultValue, ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
+        {!! Form::text($settingName . "[$lang]", old($settingName . "[$lang]", $defaultValue), ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php endif; ?>
 </div>

Modules/Setting/Resources/views/admin/fields/translatable/textarea.blade.php

@@ -5,6 +5,6 @@
         <?php $value = $dbSettings[$settingName]->hasTranslation($lang) ? $dbSettings[$settingName]->translate($lang)->value : ''; ?>
         {!! Form::textarea($settingName . "[$lang]", old($settingName . "[$lang]", $value) ?: $defaultValue, ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php else: ?>
-        {!! Form::textarea($settingName . "[$lang]", old($settingName . "[$lang]") ?: $defaultValue, ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
+        {!! Form::textarea($settingName . "[$lang]", old($settingName . "[$lang]", $defaultValue), ['class' => 'form-control', 'placeholder' => trans($moduleInfo['description'])]) !!}
     <?php endif; ?>
 </div>