RFR: JDK-8245919: Region#padding property rendering error [v3]

[Marius Hanl]

On Tue, 18 Apr 2023 12:17:53 GMT, John Hendrikx <jhendrikx at openjdk.org> wrote:

>> Fix bug in CSS caching code that could reset values on unrelated nodes.
>> 
>> The bug occurs due to a cache entry being constructed incorrectly when the initial node that triggered the cache entry creation has user set values. The calculated values for properties with a user set value were omitted in the cache entry, and other nodes that later share the same entry would incorrectly assume the omitted property was unstyled and were therefore reset to their default values.
>
> John Hendrikx has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
> 
>  - Merge branch 'openjdk:master' into feature/css-cache-bug
>  - Fix typo
>  - Fix bug in CSS caching code that could reset values on unrelated nodes
>    
>    The bug occurs due to a cache entry being constructed incorrectly when
>    the initial node that triggered the cache entry creation has user set
>    values. The calculated values for properties with a user set value were
>    omitted in the cache entry, and other nodes that later share the same
>    entry would incorrectly assume the omitted property was unstyled and
>    were therefore reset to their default values.

Just tested: This PR also fixes [JDK-8306747](https://bugs.openjdk.org/browse/JDK-8306747). We can probably close it as duplicate of this one then.

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

PR Comment: https://git.openjdk.org/jfx/pull/1072#issuecomment-1546955937