RFR: 8254676: Alert disables Tab selection when TabDragPolicy REORDER is used

[Johan Vos]

On Mon, 19 Sep 2022 11:43:41 GMT, Ambarish Rapte <arapte at openjdk.org> wrote:

> The fix looks good to me. Testing looks good. But I am not sure why I had included this call at the time of implementation. Requesting @kevinrushforth to take a look.

I was wondering about the original reason to include these calls. I think it may be because of the javadoc for MouseDragEvent (https://openjfx.io/javadoc/19/javafx.graphics/javafx/scene/input/MouseDragEvent.html):

You can achieve this by calling setMouseTransparent(true) on the dragged node in a MOUSE_PRESSED handler and returning it back to false in a MOUSE_RELEASED handler.

This scenario doesn't take into account the case where for some reason a MOUSE_RELEASED event is never received on the specific node -- which is the case when an Alert is being shown.

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PR: https://git.openjdk.org/jfx/pull/895