Build's customization property doesn't return the list of customized settings

Symptoms

According to the documentation, the customization property of Build API returns the list of settings that differentiate this build from a default build of the same build configuration. However, with the customized build, the response only shows that something was customized without listing the customized properties:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<build>
 <customization>
  <parameters/>
 </customization> 
</build>

Cause

This is a known issue: Implement customizations model for build entity in REST API.

Resolution

As a workaround, it is possible to request original, starting, and resulting values for parameters and compare them. Example:

GET /app/rest/builds/<Build ID>?fields=id,originalProperties($locator(name:<Parameter Name>),property(name,value)),startProperties($locator(name:<Parameter Name>),property(name,value)),resultingProperties($locator(name:<Parameter Name>),property(name,value))

Additional information

How to access resultingProperties, originalProperties, startProperties using REST API