After upgrading HtmlUnit from 2.15 to 2.17, some elements are being not "displayed", even major browsers display it. This elements are labels with a 'dynamic' style, based on size.
This repo contains a JUnit test which works using 2.15, but on changing to newer version it fails.
After cloning, you execute:
./gradlew
And the test should pass.
Edit build.gradle file, variable htmlunitVersion with a newer version (tested with 2.16, 2.17 and 2.18), and execute again the build. Test will fail.