Offset geometry (from intersection geometry) breaks after changing part dimensions

[zalexzperez]

I created a demo file so you can test it yourselves.

The part is just a 100x100mm cube that I extruded with a taper angle. Then I used the shell command and filleted the inside corners.

Finally, I created a midplane, created a sketch in it, where I used the intersect command to get the inner perimeter and lastly, I offset this intersection.

Here's the result:

Properly constrained offset geometry

If you go back to the main sketch and set a different part height, for instance, then the offset geometry shows as unconstrained and it didnt readjust to the new projected geometry:

Unconstrained offset after part size change

For some reason, both the taper angle and the fillets are required for this odd behavior to take place.

Here's the demo file:
https://a360.co/33jxrVh

Thank you in advance.

[zalexzperez]

Well, I fixed my problem by using the "Specified entities" in the selection filter option for the Intersect command.

Chain selecting the intersection geometry doesn't work, though, when trying to offset it.