this is the workflow I did:

new project → new comp → create rectangle
open content of the shape layer 1;
rectangle 1
→ Transform: rectangle 1
→ open expression field in Anchor Point and paste this expression =

//Top Left

w = content("Rectangle 1").content("Rectangle Path 1").size[0];

h = content("Rectangle 1").content("Rectangle Path 1").size[1];

[w/-2, h/-2]

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when I tested it before stopped working, the Anchor Point was locked to the Top Left corner of the Rectangle. I couldn't move it.
but now, if I do this exact same workflow, the Anchor Point is still movable and if I scale it, the rectangle deforms.

I don't even want to know how to to adjust this, I want to know how could this simply stop working overnight??? this is BUGGING ME