Cannot bind same structured buffer to 2 fragment shaders in Windows Editor

Reproduction Steps

• Open repro-project https://github.com/Wilfrid-Unity/test-unity-structuredbuffers-in-fragmentshaders in Unity Windows Editor
• Open SampleScene
• Rename mentions of "UNITY_EDITOR" in the 2 scripts, to something like "UNITY_EDITOR_DISABLED_CODE"
• Press "Play"

Expected Outcome

In Windows Editor, the same GraphicsBuffer can be bound to two different shader fragment (one "write" pass, one "read" pass).

 

As a result, the quad on the right can use data from the structured buffer written during rendering of the quad on the left:

 

Actual Outcome

In Windows Editor, the same GraphicsBuffer cannot be bound to two different shader fragments, when the quad on the right tries to read from the StructuredBuffer, it only gets (0,0,0) values (or debug colors in DX12 Editor):

 

Additional Information

 

Specs

 
GraphicsFence manual page says:
You don't need to use a graphics fence to synchronise a GPU task writing to a resource and another GPU task reading the resource.
Unity handles these resource dependencies automatically.
 
So this case should work, according to our documentation.
 

Results on Other platforms

This case works on other platform that I tested (Nitendo Switch), using only a single buffer and no GPU copy (I verified in graphics debugger that the correct GPU barriers were inserted between the "write" and "read" draws):