On Fri, 19 Aug 2022 09:19:59 GMT, Florian Kirmaier <fkirma...@openjdk.org> 
wrote:

> So it might be an option, to change this PR to only contain the null check.

If that is the route you want to go, then filing a new issue / PR is better. A 
fix with a null check might be a good option as long as we understand why the 
null is happening (so we can know whether the null check is sufficient).

> When I find some time, I will write a test to show how the parent.layout() 
> call can cause issues.
> Similar issues exist with Group - which sometimes has the effect, that 
> applications stop working when scenic view is used. (or other tooling)

That would be helpful. As it is, this PR is not really ready for review for the 
reasons I mentioned (much) earlier.

-------------

PR: https://git.openjdk.org/jfx/pull/564

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