[Autocomplete-js npm] result panel leaving space and go down on each page scroll

## Description

[Autocomplete-js npm] result panel leaving space and go down on each page scroll
## Reproduction

go to chrome browser demo where page height is more than screen size and autocomplete input is at top and then scroll one or two time and then click and search. the result will show at little down of autocomplete input

## Expected behavior

it should open just attached to autocomplete input
## Environment

- OS: Linux / macOS
- Browser: Chrome
- Autocomplete version: [e.g. 1.5.3]

Start with the Chrome demo described in the issue and reproduce the autocomplete panel position after scrolling the page, then inspect the autocomplete-js package entry points involved in positioning the results. Done means the results panel remains attached to the input after scrolling and searching on a page taller than the viewport, with the behavior checked in Chrome.

Written by the indexing model from the issue text.