It is default behaviour on macOS the window's top-left green button will set the window into full-screen mode, and if you hold the option key when clicking it then it will instead maximise the window without entering full-screen mode.
On Orion however the behaviour doesn't change if you hold the option button. So the user has to resort to manual window resizing or using a third-party window management tool in order to maximise the window size.
This behaviour is different from Safari, so it is not a WebKit bug.
The option key WILL modify the icon inside the green button, changing it from a <>
icon that signifies full-screen, into a +
icon signalling maximisation, but the behaviour doesn't follow through.
• Normal full-screen icon: https://share.cleanshot.com/p3BRZ1qG
• Maximise icon: https://share.cleanshot.com/nGybcDR1
Desired functionailty
Holding option when clicking the green window button would maximise the window size similar to most macOS software as well as all the other Mac browsers (Safari, Firefox, Chrome, etc).
Clicking it a second time would toggle the window back to its previous size.
Version 0.99.130.2-beta (WebKit 621.1.2.111.4) Build date Dec 28 2024 MacBook Air (macOS Sonoma 14.6.1 build 23G93)
Sonoma (14)