This is how it works. It will be enabled as soon as you change the 3D renderer to Cinema 4D renderer. Nothing wrong here.
Something's very wrong here. I do not want geometry options. I want classic 3d only.
And why are my effects not working anymore? They're on the layer, they're just omitted from the operation.
You are working on Classic 3D. This is why Geometry options are unavailable but you can't use the until you change the renderer. There is no option in After EFfects to "hide" Gemotry options when working on the Classic 3D renderer.
Regarding your effects, what kind of effect are you using? I only see a Solid Layer in your previous screen capture.
Effects on 3D layers are disabled if you use the C4D rendering engine. You cannot move or rotate any layer with Puppet Pin applied unless you pre-compose the layer before moving, scaling, or rotating it.
I don't know how long Geometry Options popped up on 3D layers with the Classic rendering option open, but it is there on all four versions of AE I have installed on my main computer.
Removing the Puppet Effect removed the bug. Puppet had basically just stopped rendering.
I had to rebuild the effect.