SwingInterop.jar cannot display full content properly

Steps to reproduce:
1) Install jdk8b92 and unzip FX8b93: javafx-sdk-for-cobundle.zip, javafx-runtime-for-cobundle.zip, qa-samples.zip
2) launch this SwingInterop.jar by running:
jdk1.8.0/bin/java -jar qa-samples/SwingInterop.jar
3) Click on "Web Browser tab" from JavaFX 2.0 in Swing

SwingInterop.jar cannot display full content properly with b93.
The problem is not reproducible with b92.
Two screenshots are attached to compare with.