"Smudge" factor on Mac OSX mouse events?

[Laird Nelson]

(Disclaimer: I happen to work for Oracle but this has nothing to do with my
job.)

I have been having trouble double-clicking things with my Apple Magic Mouse
on my M1 Mac when running (Swing-based) Netbeans (see
https://github.com/apache/netbeans/issues/8609 and the inciting discussion
at https://github.com/apache/netbeans/discussions/8580). I noticed that
perhaps (?) this is due to the lack of a "smudge factor" correcting for
inadvertent tiny mouse motion events while double clicking. It seems,
perhaps, that the Magic Mouse is very finicky in this area where the
built-in Mac trackpad is not.

At any rate, the XWindows toolkit has this:
https://github.com/openjdk/jdk/blob/master/src/java.desktop/unix/classes/sun/awt/X11/XWindow.java#L71-L75

But perhaps (?) the analogous Mac OSX area does not:
https://github.com/openjdk/jdk/blob/master/src/java.desktop/macosx/classes/sun/lwawt/macosx/CPlatformResponder.java#L71-L79
and it seems like this might result in the observed behavior.

Is this a bug or works-as-it-does?

Best,
Laird
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