RFR: 8313424: JavaFX controls in the title bar (Preview) [v81]

[Cormac Redmond]

On Thu, 5 Jun 2025 00:50:30 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

>> Implementation of [`StageStyle.EXTENDED`](https://gist.github.com/mstr2/0befc541ee7297b6db2865cc5e4dbd09).
>
> Michael Strauß has updated the pull request incrementally with one additional commit since the last revision:
> 
>   rename WindowManager to DesktopEnvironment

I am noticing some strange artifacts, whereby the window icons are partially or completely disappearing, or (more often) their styling is not changing on hover.

I don't have a screenshot of all three disappearing, but it has happened.

I am not doing anything unusual, so this is odd. I know such a "bug" report without a reproducible example, is a pain. But this is just an FYI, that *something* is happening. No other styling is affected, just these windows icons.  I will post more when I know more.

Here, my mouse was hovering over X (not in screenshot), note it isn't red:
![bug3](https://github.com/user-attachments/assets/d3bca8a1-0700-4376-b720-5199f9449d52)

Here, one icon has disappeared:
![bug2](https://github.com/user-attachments/assets/a9486ecf-0bf4-49a4-be98-43c056c6cb77)

Here, two have:
![bug1](https://github.com/user-attachments/assets/9d9f6575-123f-484d-bcc4-0753f354ed9c)

What I appear to be able to reproduce the easiest, is where the three icons are still visible, but styling does not change on hover. All I need to do is click around my app a little bit, loading a few different (unrelated) views, and this "bug" occurs.

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PR Comment: https://git.openjdk.org/jfx/pull/1605#issuecomment-2953191791