RFR: 8280482: Window transparency bug on Linux [v2]

[Alexander Zvegintsev]

On Thu, 20 Jul 2023 15:29:39 GMT, Tejesh R <tr at openjdk.org> wrote:

>> test/jdk/java/awt/Multiscreen/MultiScreenCheckScreenIDTest.java line 45:
>> 
>>> 43:  * @bug 8280482
>>> 44:  * @key headful
>>> 45:  * @requires (os.family == "linux")
>> 
>> Did you check it on other systems? What prevents this test to be available on all systems?
>
> Didn't check on other systems, since the fix is in X11.

So we should check this, just in case other systems have similar issues.
(and remove the requires tag if there are no issues).

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PR Review Comment: https://git.openjdk.org/jdk/pull/14825#discussion_r1270476689