Object location and rotation not rendered properly

[rahul-martianaut]

Describe the issue

The function initially renders the object pose (location and rotation) according to the provided input, but after a few images, the object returns to its default state, lying flat on the surface.

Minimal code example

# Define a function that samples 6-DoF poses
def sample_pose_func(obj: bproc.types.MeshObject):
    # min = np.random.uniform([-0.2, -0.2, 0], [-0.1, -0.1, 0])
    # max = np.random.uniform([0.1, 0.1, 0.4], [0.2, 0.2, 0.5])
    #obj.set_location(np.random.uniform(min, max))

    min_position = [0, 0, 0]  # Example minimum position
    max_position = [0.1, 0.1, 0.1]     # Example maximum position
    position = np.random.uniform(min_position, max_position)  
    obj.set_location(position)

    min_pitch, max_pitch = np.radians(-45), np.radians(45)  # Pitch range
    min_roll, max_roll = np.radians(-90), np.radians(90)    # Roll range
    min_yaw, max_yaw = np.radians(-180), np.radians(180)    # Yaw range

    # Sample Euler angles within defined ranges
    pitch = np.random.uniform(min_pitch, max_pitch)
    roll = np.random.uniform(min_roll, max_roll)
    yaw = np.random.uniform(min_yaw, max_yaw)

    obj.set_rotation_euler([1.57, 1.57, 1.57])
    #rotation = bproc.sampler.uniformSO3()

for obj in (sampled_target_bop_objs):
        obj.enable_rigidbody(active=True)
        # The ground should only act as an obstacle and is therefore marked passive.
        # To let the object fall into the valleys of the ground, make the collision shape MESH instead of CONVEX_HULL.
    plane.enable_rigidbody(active=False, collision_shape="MESH")

    # Physics Positioning
    bproc.object.simulate_physics(min_simulation_time=3,
                                    max_simulation_time=20,
                                    check_object_interval=1,
                                    substeps_per_frame = 20,
                                    solver_iters=40)

Files required to run the code

No response

Expected behavior

First few frames (pose applied)

Next frames (pose not applied)

BlenderProc version

v2.5.0