RFR: 8187759: Background not refreshed when painting over a transparent JFrame [v2]

[Sergey Bylokhov]

On Tue, 6 Feb 2024 08:09:20 GMT, Tejesh R <tr at openjdk.org> wrote:

>> Since the fix was done for linux alone, I have restricted the test to it. Anyhow it works on windows and mac.
>
> Somehow the automated test is not working flawless in windows and mac. In windows the image is getting stuck at center of white frame when its made automatic and in mac CI machines are failing even though the white screen is clear. Since the fix is specifically for linux I think we can leave the test for linux alone.

It is better to check why it fails there, it uses the public api only and it should work on all platforms.

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PR Review Comment: https://git.openjdk.org/jdk/pull/17081#discussion_r1490328461