Magento2 - Adminhtml - Checkboxes default as checked when it does not show as checked

Question

I am a bit of a lost as to handling checkboxes (a group of them) for a custom form, made as a UI Component.

On the form, they look as if they are unchecked, but if I click them then it reacts normally, but the "Pencil" indicator does not show up on the tab button on the left of the admin page until I unchecked the checkbox that it shows this part of the form has been changed. Furthermore, if I submit the form without changing the checkboxes then the POST data shows they are checked with their correct values. It is only when I "check" then "uncheck" the boxes that the POST value does NOT include the fields.Please reply me if anyone know.

Vendor/Module/view/adminhtml/ui_component/location_listing.xml

<fieldset name="features">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="label" xsi:type="string" translate="true">Features</item>
 </item>
 </argument>
 <field name="feature_discovery">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="label" xsi:type="string">Discovery Center</item>
 <item name="visible" xsi:type="boolean">true</item>
 <item name="dataType" xsi:type="string">text</item>
 <item name="formElement" xsi:type="string">checkbox</item>
 <item name="value" xsi:type="number">1</item>
 <item name="checked" xsi:type="boolean">false</item>
 <item name="source" xsi:type="string">features</item>
 </item>
 </argument>
 </field>
 <field name="feature_classes">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="label" xsi:type="string">Classes</item>
 <item name="visible" xsi:type="boolean">true</item>
 <item name="dataType" xsi:type="string">text</item>
 <item name="formElement" xsi:type="string">checkbox</item>
 <item name="value" xsi:type="number">2</item>
 <item name="checked" xsi:type="boolean">false</item>
 <item name="source" xsi:type="string">features</item>
 </item>
 </argument>
 </field>
 <field name="feature_outlet">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="label" xsi:type="string">Outlet Center</item>
 <item name="visible" xsi:type="boolean">true</item>
 <item name="dataType" xsi:type="string">text</item>
 <item name="formElement" xsi:type="string">checkbox</item>
 <item name="value" xsi:type="number">3</item>
 <item name="checked" xsi:type="boolean">false</item>
 <item name="source" xsi:type="string">features</item>
 </item>
 </argument>
 </field>
</fieldset>

Before any interaction

After checking an "unchecked" box

After unchecked a checked box

Answer 1

I went from:

<field name="feature_classes">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="label" xsi:type="string">Classes</item>
 <item name="visible" xsi:type="boolean">true</item>
 <item name="dataType" xsi:type="string">text</item>
 <item name="formElement" xsi:type="string">checkbox</item>
 <item name="value" xsi:type="number">2</item>
 <item name="checked" xsi:type="boolean">false</item>
 <item name="source" xsi:type="string">features</item>
 </item>
 </argument>
</field>

To

<field name="feature_classes">
 <argument name="data" xsi:type="array">
 <item name="config" xsi:type="array">
 <item name="label" xsi:type="string">Classes</item>
 <item name="visible" xsi:type="boolean">true</item>
 <item name="dataType" xsi:type="string">text</item>
 <item name="formElement" xsi:type="string">checkbox</item>
 <item name="valueMap" xsi:type="array">
 <item name="true" xsi:type="number">1</item>
 <item name="false" xsi:type="number">0</item>
 </item>
 <item name="source" xsi:type="string">features</item>
 </item>
 </argument>
 </field>

Basically replacing the value and checked items for a valueMap item.