RFR: 8231864: JavaFX Labels in Tab's VBox is not displayed until it is clicked

Mon Dec 19 16:57:59 UTC 2022

On Mon, 19 Dec 2022 15:50:19 GMT, Lukasz Kostyra <lkostyra at openjdk.org> wrote:

> Creating a not-displayed node and then modifying its contents caused JFX to not consume its old dirty region and thus not update it. When such node was displayed, its old dirty region was used for drawing, which in some cases (ex. new content taking more space - a Label having more text as in bug request) caused it to clip.
> 
> Resolved by always unionizing dirty regions with new bounds when calculating Node's transformed bounds.
> 
> Change was tested on macOS and Windows 10 and does not affect any tests.

This looks like the right fix. @arapte can you review?

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PR: https://git.openjdk.org/jfx/pull/978