Crash when filling an array using drag-and-drop, and moving the object between the array slots

Development Programming & Scripting
1

Repro steps from a blank project:

  • Create a blueprint BP_ArrayActor, add a variable Actors with type Array of Actors and mark it Instance Editable
  • Save the default level UE generates with the project to disk
  • Add BP_ArrayActor to the level and select it
  • Add 2 empty items to the array using the “+” button
  • Click the “lock” button in the Detail panel to prevent it from showing another object
  • Start dragging any actor from the World Outliner into the array
  • Position the cursor right between the array item UI blocks and release the button

Can reproduce every time. UE 4.18, Windows 7.

I attach a [barebones repro project][1] and also here’s a screenshot before the crash:

220333-array-drag.png

2

Hello rizzin,

I followed the steps you provided in 4.18.1 and cannot produce the crash that you described. Can you try updating to 4.18.1 and let me know if you still get the same crash?

Thanks,
Tyler

3

Have just updated to 4.18.1, the bug is not there.
Thanks!