Hotkeys [1;2;3 + Mousedrag] possible for Pan;Zoom;Rotate ?

 From:  Nikita3D
10740.14 In reply to 10740.12 
Hey Michael,

it's a bit frustrating to fillet corners. Very often it just doesn't work or showing weird "fillets".
I try a lot of different variations of edges, but in this case almost never work out.

What is the problem there?
Screenshots:
https://ibb.co/HB9yBkQ
https://ibb.co/W55rcyd
https://ibb.co/qgG2kfR


FIle:
https://www.dropbox.com/s/4wt4dh77g849v3x/20220625_moi3d_practise_robotic_arm.3dm?dl=0