What would cause the "Inset Shadows for Movable Objects" setting to be locked?

Development Rendering
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1

Im trying to disable “Inset Shadows for Movable Objects” for my Directional Light, but the option is grayed out and not interact-able. Nothing Ive tried allows me to actually interact with the setting.

What would cause the “Inset Shadows for Movable Objects” setting to be locked?

2

Hello, your directional light must be Static. To use this setting, it has to be set to Stationary.

3

check if Dynamic Shadow distance is bigger than 8000. if yes, inset shadow is automatically forced off