Hardsurface - bevel tool problem

Hello, I’ve started following Josh Gambrell’s tutorial on hardsurface modelling. so unfortenately a problem happened after aplying bevel into exterior face of smaller object. This also disappear when i increase bevel segments.

Can I get any explanation about that issue? Thanks in advance.

you have the bevel tool and a bevel modifier active at the same time. Is this intentional?

hmmm… thanks for advice, definetely I need to work way more with some functions to figure out whats is going on generally with hard surfaces.

And as I followed the instructions (if i’m not wrong, then) I think yes, its intentional.