ABAQUS Internal force output after section slicing

[a126z]

As shown in the figure below, a cantilever beam is subjected to a vertical downward force at the apex of the free end. It is logical that only fy,mx has significance, and fy,fz,my,mz are all 0. But why do fy,fz,my,mz still have values?Why is fy uneven -1e7?

 

[SWComposites]

Likely due to the boundary conditions at the fixed end

 

[a126z]

For a 100m long cantilever beam, one end is restrained in all 6 degrees of freedom and one end is free. I found that ABAQUS intercepts the internal force (SF,SM) of the section at a position 0.25m from the end as the value of the end. What is the reason for this?
If an external force of 1e7N is applied to the free end along the axial direction, and the calculation is taken to 20 slices along the axial direction, the value of the axial force will be
10000000.00
9997000.00
9997000.00
9998000.00
9998000.00
9998000.00
9998000.00
9998000.00
9999000.00
9999000.00
9999000.00
9999000.00
9999000.00
9999000.00
10000000.00
10000000.00
10000000.00
10000000.00
90950.00
Why are there inconsistent numbers?