RFR: 8079267: [TEST_BUG] Test java/awt/Frame/MiscUndecorated/RepaintTest.java fails

[Alexander Zvegintsev]

On Thu, 28 Oct 2021 13:24:41 GMT, Alexander Zvegintsev <azvegint at openjdk.org> wrote:

> This test does not fail on Windows and does fail on Linux. 
> 
> After de-iconification we expect to see the button focused:
> ![image](https://user-images.githubusercontent.com/77687766/139171852-54413dba-d58a-46d4-ab83-59d93868e287.png)
> 
> Actual look:
> ![image](https://user-images.githubusercontent.com/77687766/139171775-80e64e58-c49d-489a-8fe0-fb0640fc3be9.png)
> 
> Button loses focus on `frame.to Front()` call, after its removal test passes. There is an [open issue](https://bugs.openjdk.java.net/browse/JDK-7156130) for this.
> 
> 
> Some cleanup was also made. Testing is green for all platforms.
> 
> 
> I am unable to reproduce [8266244 / macosx-aarch64](https://bugs.openjdk.java.net/browse/JDK-8266244), however it is not removed from the problem list due to its intermittent nature which needs more time to investigate.

> "Button loses focus on frame.to Front() call, after its removal test passes. There is an open issue for this."
> 
> Is it specific to Button ?
> 
> You may want to discuss with @azuev-java since he is using toFront to get focus over in #6161 but it isn't a Button there.

It is not specific to Button, it may be some other component as well. 
A window itself gets the focus on `toFront()` call, but not the previously focused component inside of it.

#6161 does not have any components and requires only window focus for the test, so it should not face this issue.

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PR: https://git.openjdk.java.net/jdk/pull/6157