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Steven Miller critical edge #240

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7 changes: 4 additions & 3 deletions browsers/viewport.mdx
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Expand Up @@ -231,13 +231,14 @@ await kernel.browsers.update(kernel_browser.session_id, viewport={"width": 1024,

<Warning>
There are important limitations when changing the viewport:
- **Headful browsers**: You can't resize the viewport while [live view](/browsers/live-view) is active or while a [replay](/browsers/replays) is actively recording unless you set the `force` flag to `true`.
- **Headful browsers with live view active**: You can't resize the viewport while [live view](/browsers/live-view) is connected.
- **Headful browsers with replay recording active**: You can't resize the viewport while a [replay](/browsers/replays) is actively recording unless you set `viewport.force` to `true`.
- **Headless browsers**: Changing the viewport triggers a Chromium restart, which takes several seconds and may disrupt active CDP connections.
</Warning>

### Force resizing during recording
### Force resizing during replay recording

If you need to resize the viewport while a replay is actively recording, set `force` to `true` in the update request. This stops the current recording, resizes the viewport, and restarts the recording — resulting in multiple replay segments for the session.
If you need to resize the viewport while a replay is actively recording, set `force` to `true` in the update request. This stops the current replay recording, resizes the viewport, and starts a new replay recording segment for the same session.

<CodeGroup>
```typescript Typescript/Javascript
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