RFR: JDK-8298104: NPE on synchronizeSceneNodes()

[Daniel]

On Wed, 3 May 2023 11:46:50 GMT, Daniel <duke at openjdk.org> wrote:

> A null pointer exception occurs on the ScenePulseListener when iterating through the dirty node list.
> A null check is needed on the node before calling node.getScene().
> 
> The error occurs occasionally and causes the application to crash.
> 
> Issue: [JDK-8298104: NPE on synchronizeSceneNodes()](https://bugs.openjdk.org/browse/JDK-8298104)

[https://oca.opensource.oracle.com/api/v1/oca-requests/12557/documents/12517/download](https://oca.opensource.oracle.com/api/v1/oca-requests/12557/documents/12517/download)

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PR Comment: https://git.openjdk.org/jfx/pull/1123#issuecomment-1532894525