RFR: JDK-8306990: The guarantees given by Region's floor and ceiling functions should work for larger values [v2]

[Andy Goryachev]

On Tue, 2 May 2023 15:18:02 GMT, John Hendrikx <jhendrikx at openjdk.org> wrote:

> Okay, I will investigate, I have an idea what this can be, just very surprised that the rounding fixes would cause any issues in this code.

Thank you. 
I wonder if other places might also exhibit a similar failure mode.  `scaledCeil` is called by `snapSizeX/snapSizeY` as well as `layoutInArea()` which are ... everywhere.

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PR Comment: https://git.openjdk.org/jfx/pull/1118#issuecomment-1531692780