How to remove autofocus on rendered elements in Leaflet?

Question

JavaScript

Good afternoon, I have a non-geographic map (as an example from the docks). With the help of a promise, I take the coordinates of polylines in JSON from the service and draw them. but for some reason the map does some kind of autofocus on the last rendered element.
I read that there is some kind of autoPan, but this is for popups, so it's not about my case. Yes, I distribute popups to polylines and polygons that I draw - I do bindPopup and specially placed autoPan: false everywhere. However, this does not help, because, most likely, the matter is different.
If I draw polylines, then I start drawing polygons - the same story, there will be focus on the last drawn one. You need to somehow get rid of it.
Who had experience?
Help whoever can.

Answer 1

Well, that is, not "it itself", but you yourself
map.fitBounds(polygon.getBounds());