* [#315 Change initial pose of pendulum example (backport #313)](https://github.com/ros-controls/gazebo_ros2_control/pull/315) has been created for branch `humble`
* [#316 Change initial pose of pendulum example (backport #313)](https://github.com/ros-controls/gazebo_ros2_control/pull/316) has been created for branch `iron`
Passive joints were always "moving", but as if they were fixed in inertial frame. A movement of the parent link did not effect the respective joint.
For demonstration purposes, I change the initial pose to be in the lower equilibrium to make this clearer: https://github.com/ros-controls/gazebo_ros2_control/assets/3367244/630cc8b8-6cb4-4dbc-9caa-948c085052e0
_Originally posted by @christophfroehlich in https://github.com/ros-controls/gazebo_ros2_control/issues/172#issuecomment-2105185043_