Filter on mobile version and other bug

Hello,

I have 2 questions.
1. The filter on the mobile version isn’t working properly. I can not scroll in the filter and the filter is not aligned with the edge. How can I make the scroll bar work again and ensure it’s neatly aligned with the edge? I can’t find where to edit it.
2. There’s a large white patch between the filter and my products, but I don’t know where it’s come from.

Thankyou in advance.