There is no thumb on the slider with options -Djdk.gtk.version=3 -Djdk.gtk.verbose=true

Testsuite: Regression manual
Test name(s):javax/swing/JScrollBar/8039464/Test8039464.java
Product(s) tested: JDK8u202b03 (64bit)
OS/architecture: OEL7.5-uek-x64
Test tool:jtreg4.2b13
Options:-Djdk.gtk.version=3 -Djdk.gtk.verbose=true

Reproducible: Always
Reproducible on machine: Evergreen-machine
 
Actual behavior:
1.There is no slider on the thumb with options -Djdk.gtk.version=3 -Djdk.gtk.verbose=true,please refer to Test8039464_with_option.jpg.
2.We tried to rerun the case without Options, the test is passed,please refer to Test8039464_without_options.jpg

Affect Test:
closed/javax/swing/JSlider/6244952/bug6244952.java please refer to bug6244952_with_options.jpg and bug6244952_without_option.jpg
javax/swing/JSlider/4987336/bug4987336.java please refer to bug4987336_with_options.jpg and bug4987336_without_option.jpg