RFR: 8375070: NPE in Scene.ClickGenerator::preProcess when mouse button is none

[Christopher Schnick]

On Mon, 12 Jan 2026 22:07:16 GMT, Christopher Schnick <duke at openjdk.org> wrote:

> A straightforward fix to just include MouseButton.NONE in the click counter map in cases weird mouse button events are sent. Alternatively, these events could also be ignored/dropped at some point

Yes, I understand. The only reason I submitted this was because I have seen it multiple times now and the fix does not seem to have any adverse effects on other stuff.

It should be reproducible in headless mode when sending an event manually. I will try to create a reproducer for that.

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PR Comment: https://git.openjdk.org/jfx/pull/2034#issuecomment-3740928808