Doctor summary (to see all details, run flutter doctor -v):
[!] Flutter (Channel [user-branch], 3.44.0-1.0.pre-101, on Microsoft Windows [Version 10.0.26200.8246], locale en-150)
! Flutter version 3.44.0-1.0.pre-101 on channel [user-branch] at D:\Tools\flutter\sdk
Currently on an unknown channel. Run `flutter channel` to switch to an official channel.
If that doesn't fix the issue, reinstall Flutter by following instructions at https://flutter.dev/setup.
! Upstream repository unknown source is not a standard remote.
Set environment variable "FLUTTER_GIT_URL" to unknown source to dismiss this error.
[√] Windows Version (11 Pro 64-bit, 25H2, 2009)
[X] Android toolchain - develop for Android devices
X Unable to locate Android SDK.
Install Android Studio from: https://developer.android.com/studio/index.html
On first launch it will assist you in installing the Android SDK components.
(or visit https://flutter.dev/to/windows-android-setup for detailed instructions).
If the Android SDK has been installed to a custom location, please use
`flutter config --android-sdk` to update to that location.
[√] Chrome - develop for the web
[√] Visual Studio - develop Windows apps (Visual Studio Community 2026 18.5.0)
[√] Connected device (3 available)
[√] Network resources
! Doctor found issues in 2 categories.
Steps to reproduce
Expected results
Impeller should recreate Vulkan swapchain transients when the surface size changes
Actual results
Incorrectly formed Vulkan framebuffers/render targets due to transients not being recreated on resize
Code sample
Code sample
no sample, custom embedder
Screenshots or Video
Screenshots / Video demonstration
resize_bug.mp4
Logs
Logs
Flutter Doctor output
Doctor output