Hmmm, if there is a similar search to the "off" state, for some strange reason, it "interrupts" the search of the bookmarks.
The remedy is to change the alias of the search.
But! in this case, search for "https: //www.avito.ru/moskva?bt=1&s=1&q=%s"
gives a 404 page
And update(!) this page shows(!) the result
: If add "display name search" solely through the context menu
, it creates a bookmark with address "https://www.avito.ru/search
"but when you use her alias all the keys (moskva?bt=1&s=1&q=)", where" substituted and everything works. I did not understand the principle )))