Hi there,
While it’s not possible to disable that jump-to functionality for the autocomplete specifically. Do you happen to be using the Swiftype module created by MuseThemes? That module uses an older version of the Swiftype embed script and could potentially be creating conflicts with other JavaScript resources you have loaded on the page.
If using MuseThemes, I’d recommend following up with their community and support forum for additional assistance. Another option that would allow you more control is to use the latest version of the Swiftype embed as provided from the Dashboard. You can do so using the Insert > HTML object within Muse.
That way you could have additional flexibility with where the script loads in relation to the rest of the assets on the page.
We’ve some additional overview here: How can I use Swiftype with my site built in Adobe Muse CC?