Compiling Blueprint Hides Components

  1. Create a new Actor Blueprint. We’ll call it the Parent.
  2. Create a new Blueprint as a child of the Parent Blueprint. We’ll call it the Child.
  3. Open the Child Blueprint.
  4. Add a StaticMesh Component attached to the inherited DefaultSceneRoot Component.
  5. Close the Child Blueprint.
  6. Create a new Blueprint as a child of the Child Blueprint. We’ll call it the Grandchild.
  7. Open the Grandchild Blueprint.
  8. Add another StaticMesh Component attached to the inherited StaticMesh Component.
  9. Now click the Compile button.
  10. Notice the Component hierarchy in the Component list disappears.
  11. Close the Blueprint and reopen it and the Component list has returned.
  12. Clicking Compile again cause it to disappear again.

Haven’t tested this in 4.18 yet, only test in 4.17. Have tested in a blank project as well as my own project.

Hello wilberolive,

Thank you for the report. I was able to reproduce the issue in 4.17.2 and 4.18. I have logged the issue, which you can track by following this link: Unreal Engine Issues and Bug Tracker (UE-50811)

If you have any other questions please let me know.

Best Regards,