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 :
macOS Sierra 10.12.1 (16B2555)

A DESCRIPTION OF THE PROBLEM :
Fix for [8167492] has introduced a new problem where right clicking in a component that has a vertical scroll bar the panel will scroll down by one click.

One example is the projects panel in the NetBeans IDE, attempting to right click any node will scroll down by one scroll motion of a mouse wheel.

If fingers are tapped at exactly the same time the behaviour is not exhibited, however; if both fingers are tapped slightly after one another the behaviour is present.

[8167492]: http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8167492

REGRESSION. Last worked in version 8u112

ADDITIONAL REGRESSION INFORMATION:
java version "1.8.0_112"
Java(TM) SE Runtime Environment (build 1.8.0_112-b16)
Java HotSpot(TM) 64-Bit Server VM (build 25.112-b16, mixed mode)


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
In NetBeans IDE have projects window open with projects present, expand enough nodes and reduce window size so the vertical content is greater than the visible size.

Attempt to right click using a two finger tap gesture on the trackpad but with fingers being slightly out of sync hitting the trackpad surface.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Node under mouse cursor should have right click action function or if none under mouse the right click action should apply tot he projects component.
ACTUAL -
Content scrolls down by one click then the right click action is invoked.

REPRODUCIBILITY :
This bug can be reproduced often.

CUSTOMER SUBMITTED WORKAROUND :
None known.