Why does an indent appear when a button is clicked?

Question

css

using vuetify
why is this happening?
that is, when you click on the update button, a bar appears on the right (and below) because of this
, you can zoom on the phone (although this is disabled)
on the PC version, everything is fine content. but the buttons have already moved down a bit. (This is also a problem) If you make a swipe to the left, a white bar will appear on the edge. appears only after pressing this button. this is what the button does

Answer 1

the case is apparently in focus, blue border, try to play with the styles