Try by removing the relative layout

                android:layout_height="wrap_content"

                android:orientation="vertical">

                <RelativeLayout

                    android:id="@+id/header_view"

                    android:layout_width="match_parent"

                    android:layout_height="wrap_content"

                    android:background="?attr/colorAccent"

                    android:visibility="gone"

                    android:theme="@style/AppTheme">

                    <androidx.appcompat.widget.AppCompatImageView

                        android:layout_width="match_parent"

                        android:layout_height="164dp"

                        android:contentDescription="@null"

                        android:scaleType="centerCrop"

                        app:srcCompat="@drawable/background" />

                    <androidx.appcompat.widget.AppCompatImageView

                        android:id="@+id/current_account_image"

                        android:layout_width="@dimen/avatar_size"

                        android:layout_height="@dimen/avatar_size"

                        android:layout_gravity="center_vertical"

                        android:layout_marginStart="@dimen/header_padding"

                        android:layout_marginLeft="@dimen/header_padding"

                        android:layout_marginTop="46dp"

                        android:contentDescription="@string/app_name"

                        app:srcCompat="@mipmap/ic_launcher" />

                    <TextView

                        android:id="@+id/app_name"

                        android:layout_width="match_parent"

                        android:layout_height="wrap_content"

                        android:layout_below="@id/current_account_image"

                        android:layout_marginStart="@dimen/header_padding"

                        android:layout_marginLeft="@dimen/header_padding"

                        android:layout_marginTop="6dp"

                        android:layout_marginEnd="@dimen/header_padding"

                        android:layout_marginRight="@dimen/header_padding"

                        android:ellipsize="end"

                        android:shadowColor="@color/fg_default"

                        android:shadowDx="0.5"

                        android:shadowDy="0"

                        android:shadowRadius="2"

                        android:text="@string/app_name_long"

                        android:textColor="@android:color/white"

                        android:textSize="14sp"

                        android:textStyle="bold" />

                    <TextView

                        android:id="@+id/account"

                        android:layout_width="match_parent"

                        android:layout_height="wrap_content"

                        android:layout_below="@+id/app_name"

                        android:layout_marginStart="@dimen/header_padding"

                        android:layout_marginLeft="@dimen/header_padding"

                        android:layout_marginEnd="@dimen/header_padding"

                        android:layout_marginRight="@dimen/header_padding"

                        android:ellipsize="end"

                        android:maxLines="1"

                        android:shadowColor="@color/fg_default"

                        android:shadowDx="0.5"

                        android:shadowDy="0"

                        android:shadowRadius="2"

                        android:textColor="@android:color/white"

                        android:textSize="12sp"

                        tools:text="user@nextcloud.example.com" />

                </RelativeLayout>

                <androidx.recyclerview.widget.RecyclerView

                    android:id="@+id/navigationList"

                    android:layout_width="match_parent"