There currently is a regression regarding ros2_control, that isn’t showing up in the builds: Controller sorting can cause segfaults when interfaces are created on controller configuring · Issue #1164 · ros-controls/ros2_control · GitHub

There is a fix in place (Fix the controller sorting bug when the interfaces are not configured (fixes #1164) by saikishor · Pull Request #1165 · ros-controls/ros2_control · GitHub) that would be nice to get included into the next sync as otherwise this will make things crash at runtime for people using the ur_robot_driver and potentially also in other ros2_control setups.

Edit: The corresponding rosdistro PR: ros2_control: 2.35.0-1 in 'humble/distribution.yaml' [bloom] by bmagyar · Pull Request #38983 · ros/rosdistro · GitHub