Hi,
Sure, you can adjust both issues:
1. On the Frontend search settings -> General Panel, change the filter box max height to ‘auto’, like so: https://i.imgur.com/7V74Cdh.png
This should not trigger the scrolling feature, and display the full list of the filters.
2. That is a default behavior, you can turn it off under the Layout Options -> Results Behavior panel: https://i.imgur.com/KP8eUkN.png
These should do the trick 🙂