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fix: window.open popups are always resizable (#47540)

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fix: window.open popups are always resizable

Closes https://github.com/electron/electron/issues/43591.

Per current WHATWG spec, the `window.open` API should always
create a resizable popup window. This change updates the
`parseFeaturesString` function to ensure that windows opened
with `window.open` are always resizable, regardless of the
`resizable` feature string.
This commit is contained in:
Shelley Vohr
2025-07-02 15:02:59 +02:00
committed by GitHub
parent 07338bb1cf
commit 655037fbdf
3 changed files with 33 additions and 0 deletions
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docs/breaking-changes.md
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@@ -21,6 +21,23 @@ macOS 11 (Big Sur) is no longer supported by [Chromium](https://chromium-review.
Older versions of Electron will continue to run on Big Sur, but macOS 12 (Monterey)
or later will be required to run Electron v38.0.0 and higher.
### Behavior Changed: window.open popups are always resizable
Per current [WHATWG spec](https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-open-dev), the `window.open` API will now always create a resizable popup window.
To restore previous behavior:
```js
webContents.setWindowOpenHandler((details) => {
return {
action: 'allow',
overrideBrowserWindowOptions: {
resizable: details.features.includes('resizable=yes')
}
}
})
```
## Planned Breaking API Changes (37.0)
### Utility Process unhandled rejection behavior change