diff --git a/cpp/open3d/ml/paddle/misc/VoxelPoolingOpKernel.cpp b/cpp/open3d/ml/paddle/misc/VoxelPoolingOpKernel.cpp
index 230a459e340..a70e05281d7 100644
--- a/cpp/open3d/ml/paddle/misc/VoxelPoolingOpKernel.cpp
+++ b/cpp/open3d/ml/paddle/misc/VoxelPoolingOpKernel.cpp
@@ -16,7 +16,7 @@ namespace {
 template <class TReal, class TFeat>
 class OutputAllocator {
 public:
-    OutputAllocator(paddle::Place place) : place(place) {}
+    explicit OutputAllocator(paddle::Place place) : place(place) {}
 
     void AllocPooledPositions(TReal** ptr, size_t num) {
         if (num != 0) {
diff --git a/python/open3d/ml/paddle/python/layers/convolutions.py b/python/open3d/ml/paddle/python/layers/convolutions.py
index 4773de30135..8c63f5fae4c 100644
--- a/python/open3d/ml/paddle/python/layers/convolutions.py
+++ b/python/open3d/ml/paddle/python/layers/convolutions.py
@@ -272,12 +272,6 @@ def forward(self,
                     queries=out_positions,
                     radius=radius,
                     hash_table=fixed_radius_search_hash_table)
-                if return_distances:
-                    if self.radius_search_metric == 'L2':
-                        neighbors_distance_normalized = self.nns.neighbors_distance / (
-                            radius * radius)
-                    else:  # L1
-                        neighbors_distance_normalized = self.nns.neighbors_distance / radius
 
             elif len(extents.shape) == 1:
                 radii = 0.5 * extents
@@ -291,6 +285,11 @@ def forward(self,
             if self.window_function is None:
                 neighbors_importance = paddle.empty((0,), dtype=paddle.float32)
             else:
+                if self.radius_search_metric == 'L2':
+                    neighbors_distance_normalized = self.nns.neighbors_distance / (
+                        radius * radius)
+                else:  # L1
+                    neighbors_distance_normalized = self.nns.neighbors_distance / radius
                 neighbors_importance = self.window_function(
                     neighbors_distance_normalized)
 
diff --git a/util/ci_utils.sh b/util/ci_utils.sh
index 6ccaf0922ad..1e4817aabd2 100644
--- a/util/ci_utils.sh
+++ b/util/ci_utils.sh
@@ -96,7 +96,7 @@ install_python_dependencies() {
     if [ "$BUILD_PADDLE_OPS" == "ON" ]; then # ML/requirements-torch.txt
         if [[ "$OSTYPE" == "linux-gnu"* ]]; then
             python -m pip uninstall paddlepaddle paddlepaddle-gpu -y
-            python -m pip install --pre $PADDLE_GLNX -i $PADDLE_GLNX_PIP_INDEX
+            python -m pip install --pre "$PADDLE_GLNX" -i "$PADDLE_GLNX_PIP_INDEX"
         else
             echo "unknown OS $OSTYPE"
             exit 1
diff --git a/util/run_python_unittest.sh b/util/run_python_unittest.sh
deleted file mode 100755
index 8a44295d647..00000000000
--- a/util/run_python_unittest.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-PWD="$(cd $(dirname $0); pwd)"
-OPEN3D_ROOT="${PWD}/../"
-
-# Get build scripts and control environment variables
-# shellcheck source=ci_utils.sh
-source "${PWD}/ci_utils.sh"
-
-# # Run on CPU versions
-echo "Try importing Open3D CPU Python package"
-cpu_wheel_path=$(ls ${OPEN3D_ROOT}/build/lib/python_package/pip_package/open3d_cpu*.whl)
-test_wheel $cpu_wheel_path
-echo "Running Open3D CPU Python tests..."
-run_python_tests
-echo
-
-if nvidia-smi >/dev/null 2>&1; then
-    # Run on GPU versions
-    echo "Try importing Open3D GPU Python package"
-    gpu_wheel_path=$(ls ${OPEN3D_ROOT}/build/lib/python_package/pip_package/open3d*.whl | grep -v $cpu_wheel_path)
-    test_wheel $gpu_wheel_path
-    echo "Running Open3D GPU Python tests..."
-    run_python_tests
-    echo
-fi