Reason: This usually happens because the BottomSheet itself is intercepting touch events instead of letting the RecyclerView handle them. So when you try to scroll, the BottomSheet tries to expand or collapse instead of allowing the RecyclerView to scroll properly.

How to Fix It?

Solution 1: Make sure your BottomSheet’s peek height is set properly, so the RecyclerView gets enough space to scroll:

app:behavior_peekHeight="300dp"

Solution 2: Since the BottomSheet can intercept scrolling events, you should enable nested scrolling on your RecyclerView in your Java/Kotlin code:

recyclerView.setNestedScrollingEnabled(true);

This ensures the RecyclerView can scroll inside the BottomSheet without conflicts.