Shader graph flickers when in subscene

Left side is a basic unlit shader from Shader Graph
right is the unlit URP shader that ships with Unity
Top is outside subscene, bottom is inside subscene

anyone know what the issue might be? Thank you

8781835--1192510--flicker.gif


8781835--1192516--upload_2023-2-4_11-36-41.png

not a bug, just my ignorance
these settings don’t flicker