Unlit ShaderGraph assets appear to be constantly recompiled/reimported whenever the AssetDatabase is dirtied. Occurs with the default Asset created via the Project window context menu and happens with any other default ShaderGraph Asset type where the Master Node has been replaced with an Unlit Master Node

This requires lastest master of the SRP repo & trunk (0a12 / 0a13)
Does on reproduce on OsX, only reproduces on Windows.
Does NOT reproduce in a11.

1. Open project in Unity
2. Make your manifest point to your local and up to date copy of the SRP repo
3. After SRP packages are imported and compiled, create an Unlit ShaderGraph Asset
4. Select it and duplicate it multiple times with Ctrl-D

Result: you should see the "Hold on... Unlit33.shadergraph" things come up more and more, the more you duplicate the worse it will get.
Pretty much doing anything inside the project view, such as creating a folder, will also trigger the recompiling.