Force torque sensor stops publishing

edit

Hi, I am trying to run a reinforcement learning simulation and I decided, that I needed a force/torque sensor inside my robot to improve it. When I start the simulation, for the first episode everything runs fine. But after I reset the simulation for the first time, the sensor topic stops publishing and my simulation breaks is this because the simulation doeas something to robot model? I have also camera topics and they publish just fine after the reset. Here is the code of implementation inside the robot:

   <gazebo reference="gripper_dummy_prismatic_joint">
    <provideFeedback>true</provideFeedback>
   </gazebo>
   <gazebo>
    <plugin name="ft_sensor" filename="libgazebo_ros_ft_sensor.so">
      <updateRate>100.0</updateRate>
      <topicName>ft_sensor_topic</topicName>
      <jointName>gripper_dummy_prismatic_joint</jointName>
    </plugin>
   </gazebo>

And here it is how I read it:

wrench_data = rospy.wait_for_message('/ft_sensor_topic', WrenchStamped, timeout=10)

Here is how the simulation reset is called:

self.reset_proxy = rospy.ServiceProxy(
            '/gazebo/reset_simulation', Empty)
...
rospy.wait_for_service('/gazebo/reset_simulation')
        try:
            # reset_proxy.call()
            self.reset_proxy()

When I try to call the topic manually after the reset I get following line:

rostopic echo /ft_sensor_topic
WARNING: no messages received and simulated time is active.
Is /clock being published?

EDIT:

I've tried to somehow go around the issue, and run subscriber only when the topic has data. That allowed me to keep the simulation running, but there is a side effect: with each episode, it takes longer for the topic to start publishing data, at first it is around a minute, but when I ran the simulation for a few days it ran through ~150 episodes and now it waits more than an hour for the topic. This is quite troublesome, since I'd like to run the sim for about 10000 episodes.

EDIT#2:

Tried reinstalling gazebo_ros_pkgs but that didn't help

EDIT#3:

Is it possible to save header values of a topic and when this topic starts again initiate it with them?