FULL PRODUCT VERSION :
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
OS X 10.10.1

EXTRA RELEVANT SYSTEM CONFIGURATION :
Standard Mac mini

A DESCRIPTION OF THE PROBLEM :
The mouseDragged event is fired only once when the mouse is dragged on a Panel component. This disables the dragging of the underlying component.

REGRESSION. Last worked in version 7u45

ADDITIONAL REGRESSION INFORMATION:
java version "1.8.0_25"
Java(TM) SE Runtime Environment (build 1.8.0_25-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
see here: https://bugs.openjdk.java.net/browse/JDK-8061636

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Component should receive mousedragged events.
ACTUAL -
Component receives mousedragged event only once

ERROR MESSAGES/STACK TRACES THAT OCCUR :
No error message.

REPRODUCIBILITY :
This bug can be reproduced always.

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See here: has been reported on OpenJDK ; https://bugs.openjdk.java.net/browse/JDK-8061636
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CUSTOMER SUBMITTED WORKAROUND :
No workaround other than switching back to Java 7