FULL PRODUCT VERSION :
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux XPS-15-9560 4.8.0-46-generic #49~16.04.1-Ubuntu SMP Fri Mar 31 14:51:03 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
I create JavaFX DataPicker instances with the fxml below. I open calendar by clicking on the DatePicker down arrow and try to set or change the date by clicking on the date shown in the calendar. JavaFX ignores my mouse clicks most of the time. I have to try multiple times to select or change a date.

The calendar background is transparent which makes reading the calendar itself difficult.


                              <DatePicker maxWidth="140.0" HBox.hgrow="NEVER" />
                              <Label text=" to " />
                              <DatePicker maxWidth="140.0" />


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a DatePicker with the code above.
Open the calendar by clicking the down arrow.
Click on a date in the calendar. Most selections are ignored.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Every mouse click on the calendar should update the date.
ACTUAL -
Most mouse clicks are ignored.

REPRODUCIBILITY :
This bug can be reproduced always.