MC-17606: Unable to save edited product when max_sale_qty is Magento's default

Author: zakdma

app/code/Magento/CatalogInventory/etc/adminhtml/system.xml

@@ -55,7 +55,7 @@
                 </field>
                 <field id="max_sale_qty" translate="label" type="text" sortOrder="4" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
                     <label>Maximum Qty Allowed in Shopping Cart</label>
-                    <validate>validate-number</validate>
+                    <validate>validate-number validate-greater-than-zero</validate>
                 </field>
                 <field id="min_qty" translate="label" type="text" sortOrder="5" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
                     <label>Out-of-Stock Threshold</label>

app/code/Magento/CatalogInventory/view/adminhtml/ui_component/product_form.xml

@@ -304,6 +304,7 @@
                     <settings>
                         <scopeLabel>[GLOBAL]</scopeLabel>
                         <validation>
+                            <rule name="validate-number" xsi:type="boolean">true</rule>
                             <rule name="validate-greater-than-zero" xsi:type="boolean">true</rule>
                         </validation>
                         <label translate="true">Maximum Qty Allowed in Shopping Cart</label>