Search in Topic Title

[Normando]

When I want to create a new post, while writing the topic title, I get a dropdown items like when using the search box.

[MJ]

It's new in v1.12.x

if you don't like it. You can remove it in CSS

go to /admin/appearance/customise

add this

.composer .title-container .quick-search-results {
    display: none!important;
}

save and check if it's good.