CrystalRangeSeekbar not showing when surrounded by TextViews

[lucasharada]

When I use CrystalRangeSeekbar using the entire width, it shows normally. But when I try to place 2 TextViews on the left and right of the Seekbar, the Seekbar doesn't show. See code below to replicate:

<RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <TextView
                android:id="@+id/txt_min"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true"
                android:text="MIN" />

            <com.crystal.crystalrangeseekbar.widgets.CrystalRangeSeekbar
                android:id="@+id/temperature_rangeseekbar"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_toEndOf="@+id/txt_max"
                android:layout_toLeftOf="@+id/txt_min"
                android:layout_toRightOf="@+id/txt_max"
                android:layout_toStartOf="@+id/txt_min"
                app:bar_color="#000"
                app:bar_highlight_color="#2434AD"
                app:data_type="_float"
                app:left_thumb_color="#3caf9a"
                app:left_thumb_color_pressed="#349986"
                app:max_value="42.0"
                app:min_value="35.0"
                app:right_thumb_color="#c44949"
                app:right_thumb_color_pressed="#b43a3a" />

            <TextView
                android:id="@+id/txt_max"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentEnd="true"
                android:layout_alignParentRight="true"
                android:text="MÁX" />
</RelativeLayout>