ADDITIONAL SYSTEM INFORMATION :
Windows 10/ OpenJDK 15.0.1 and OpenJFX 15.0.1

A DESCRIPTION OF THE PROBLEM :
I have developed a JavaFx application. Previously it is working perfectly with jdk1.8.0_201. Now I am shifting this application on OpenJdk and OpenJFX 15.0.1 and I find ListView items juggles when ever I am selecting any of the items. I can provide the test case of this.

REGRESSION : Last worked in version 8

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Put some items in ListView and apply some events on selection of items of ListView you can see the result.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The items must not juggle and should behave smooth as it' working with jdk 1.8
ACTUAL -
Items are juggle for some time,


---------- BEGIN SOURCE ----------
Can provide the test case.
---------- END SOURCE ----------

FREQUENCY : always