Rive crashes on Windows with multi-window enabled

Submission checklist

• I have confirmed the issue is present in the latest version of the rive Flutter package
• I have searched the documentation and forums and could not find an answer
• I have searched existing issues and this is not a duplicate

Description

Rive Native will currently crash with multi-window enabled, because the plugin will fails to initialize properly because there is no implicit window and it can't get the adapter.

Here's a possible fix: https://github.com/knopp/rive_native/pull/2

Reproduction steps / code

No response

Upload your reproduction files / stack trace

No response

Source .riv / .rev file

No response

Screenshots / video

No response

Rive Flutter package version

0.1.6

Flutter version

Flutter 3.44.0-1.0.pre-268 • channel [user-branch] • git@github.com:knopp/flutter.git
Framework • revision 1e4a4d1270 (30 minutes ago) • 2026-04-25 17:16:56 +0200
Engine • hash 13d67cabca2d9a14494b10cdc4db7ccf2b71cce0 (revision 30169ed337) (3 hours ago) • 2026-04-25
12:12:38.000Z
Tools • Dart 3.13.0 (build 3.13.0-65.0.dev) • DevTools 2.57.0

Device

Windows

OS version

Any

Additional context

No response

Start by reviewing the Rive Native plugin initialization and the possible fix in knopp/rive_native pull request #2. Reproduce the crash on Windows with Flutter multi-window enabled, then verify that the plugin initializes without an implicit window and can obtain its adapter.