RFR: 8353685: Open some JComboBox bugs 4 [v3]

[Alexander Zuev]

On Mon, 21 Apr 2025 23:05:31 GMT, Alisen Chung <achung at openjdk.org> wrote:

>> Updating and opening some JComboBox bugs
>
> Alisen Chung has updated the pull request incrementally with one additional commit since the last revision:
> 
>   add longer delay, remove headful from manual test, spacing

Marked as reviewed by kizune (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/24733#pullrequestreview-2782595323