Fillet tool effecting object size aswell

[karel.works]

There is that new feature “history based modeling” so you could go to history, find fillet step and change size or shape or edges. Its quite intuitive.

There is topic about exactly what you need

New fillet options coming with History-Based modeling

With the release of History-Based Parametric Modeling later this year, we’ll add many new options and parameters to every modeling tool available in Shapr3D. One of my favorites is the updated Fillet command, which will provide much more control over the shape of your blends. For example, we are adding support for Y vertex blends that you can even combine with the Setback option, thereby creating much smoother transitions at vertices where the edges meet tangentially. Can’t wait to ship this! …