Carla ros bridge: rosbag play issue (Detected jump back in time)

Hi,
I am new with carla and I would like to record rosbag from the simulator.
However, when I play the rosbag record previously thanks to carla-bridge I have a detected jump back in time in my rviz Console.

for example :
[ WARN] [1620051291.211954270, 3350.689309335]: Detected jump back in time of 0.000486746s. Clearing TF buffer.
[ WARN] [1620051291.713728036, 3351.186019847]: Detected jump back in time of 0.00377624s. Clearing TF buffer.

I use the synchronous mode for my simulation and I work on carla v0.9.10
Do you know where those little jump backs may come from ?