examples/windowclosing: the red button should have a black dot but not

[hajimehoshi]

Ebitengine Version

ffb7775

Operating System

• Windows
• macOS
• Linux
• FreeBSD
• OpenBSD
• Android
• iOS
• Nintendo Switch
• PlayStation 5
• Xbox
• Web Browsers

Go Version (go version)

go version go1.22.3 darwin/arm64

What steps will reproduce the problem?

Run examples/windowclosing

What is the expected result?

The red button to close the window should have a black dot indicating that the window cannot be closed immediately.

What happens instead?

A black dot is not shown.

Anything else you feel useful to add?

Is this due to new macOS?

                     ..'          hajimehoshi@Hajimes-MacBook-Pro
                 ,xNMM.           -------------------------------
               .OMMMMo            OS: macOS Sonoma 14.4.1 arm64
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     .;loddo:.  .olloddol;.       Kernel: 23.4.0
   cKMMMMMMMMMMNWMMMMMMMMMM0:     Uptime: 32 days, 21 hours, 23 mins
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  'XMMMMMMMMMMMMMMMMMMMMMMMMK.    Cursor: Fill - Black, Outline - White (32px)
    kMMMMMMMMMMMMMMMMMMMMMMd      Terminal: Code Helper 1.90.0
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