With editor Metal support turned on the Shader Graph window is extremely slow. Without Metal in editor the Blackboard and Preview windows are black and empty. Is there a fix for this?
If you think you have a reproducible bug, please file a bug report so we can track it: Unity QA: Building quality with passion
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I’m getting the same issue, however it seems the sphere preview is zoomed in somehow?
If you ramp up an effect like fresnal it comes in from the sides.
@enhawk Like I said, please report bugs through the official Unity bug reporter, otherwise we have no good way of tracking it and actually fixing the issue. 
@ChaosMage @enhawk did you report this as a bug? I experience the same thing even though I have had no problems with shader graph editing in the past.
How to reproduce:
- Open Unity Hub
- Create new project using Unity 2018.3.12f1, 2019.1.0f2 or 2019.2.0a11 (I experience the same in all 3 when testing now)
- Use the Lightweight RP template for the project
- In the SampleScene open ExampleAssets > Shaders > Paint1G_WAnim_Shader
- The Shader Graph editor window is highly unresponsive and my Mac is almost constantly showing the ‘spinning beach ball’ icon
- Close the Shader Graph window (takes patience because of unresponsiveness)
- Create a new PBR based shader and open in Shader Graph editor window
- Same unresponsiveness
- Close window
- Go to the Project Settings and disable ‘Metal Editor Support’
- Restart the Editor
- Open the same shader in the Shader Graph window and it is now highly responsive as expected
- However, blackboard and preview windows are now missing
I use a Macbook Pro 2018 model with 32 GB of memory and a Radeon Pro 560X card.
@caspr I have a similar PC to you, however I don’t think it’s the version of unity, it’s the version of the shader graph in packages.
As advised, bug reports are our friend here