RFR: 8353488: Open some JComboBox bugs 3

[Alexander Zuev]

On Sat, 19 Apr 2025 04:29:16 GMT, Alisen Chung <achung at openjdk.org> wrote:

> Opening some JComboBox bugs

test/jdk/javax/swing/JComboBox/bug4248128.java line 51:

> 49: 
> 50:             robot.keyPress(KeyEvent.VK_ALT);
> 51:             robot.keyPress(KeyEvent.VK_DOWN);

Please add keyRelease for the same keys in the reverse order - if tests are running in the same VM it can lead to the key combination being stack which in turn can affect other tests.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24767#discussion_r2051661050