Runtime Manager GUI is broken in 18.04

Required information:

• Operating system and version:
  • Ubuntu 18.04
• Autoware installation type:
  • From source (following wiki)
• Autoware version or commit hash
  • 1.12-beta.1
• ROS distribution and version:
  • melodic
• ROS installation type:
  • From source

Description of the bug

Visualization bug in runtime_manager GUI.

After lanuch runtime_manager with

./autoware/utilities/runtime_manager/scripts/run

then, when clicked the checkbox somewhere to launch nodes, I got bug as in screenshot.

Steps to reproduce the bug

1. Compile autoware with source.
2. run ./autoware/utilities/runtime_manager/scripts/run command to launch runtime_manager
3. go to computation tab
4. click the checkbox of waypoint_loader (maybe occurs with any checkbox)

Screenshots