Got it!
There is no issue with the extrusion in this file, do you have another previously saved file with the issue?
The issue with the Boolean is with the Boolean object, hinge_top.001
When the Boolean cuts out the desired area it creates new vertices. As we are using a non destructive workflow by not applying the modifiers, this is done under the hood and you can’t see the vertices in edit mode.
Scaling the hinge_top.001 mesh in the X axis in edit mode fixes the issue. If you do this slowly you will see how the Bevel grows because the vertices created by the Boolean move further from the original vertices of the hinge_bottom object.
