Hello!
In version 4.6.1, the node ‘Create Canvas Render Target 2D’ does not work; the editor will immediately crash on use (easy to reproduce, 100% repro rate).
Quick debugging shows the texture has been created correctly, but it fails to create the accompanying canvas, getting a null pointer from somewhere else in the engine. The root cause is this function call in void UCanvasRenderTarget2D::UpdateResource():
// Create the FCanvas which does the actual rendering.
FCanvas RenderCanvas(GameThread_GetRenderTargetResource(), nullptr, FApp::GetCurrentTime() - GStartTime, FApp::GetDeltaTime(), FApp::GetCurrentTime() - GStartTime, GetWorld()->FeatureLevel);
