MAGETWO-85782: 12713 #12730

 - Merge Pull Request #12730 from EfremovaVI/magento2:12713
 - Merged commits:
   1. 370e526
   2. 5e43f84
   3. ff7029f

Author: miguelbalparda

app/design/adminhtml/Magento/backend/Magento_ConfigurableProduct/web/css/source/module/components/_currency-addon.less

@@ -10,7 +10,8 @@
 @currency-addon-symbol__border-color: @field-control__border-color;
 @currency-addon-symbol__color: @color-gray52;
 @currency-addon-symbol__height: @field-control__height;
-@currency-addon-symbol__width: 1.6rem;
+@currency-addon-symbol__width: 2.6rem;
+
 
 //
 //  Common