[BUG] Blueprint : Simulate mode breaks the Mat Instance connection

Build :

  • Build : 1945001
  • Install path : D:/SoftwareFroyok/Rocket

Specs :

  • GTX 460 M (netbook)
  • Windows 7 x64
  • 16GB of Ram
  • UAC : Disabled

Description : Moving/Rotating a blueprint object in “Simulate” mode will breaks its Material Instance connection.

Repro steps : Create a blueprint object (in the content browser), add a scene component, add a static mesh component under the scene component and load a static mesh. Link a material instance to this component. Create a setup that allow you to update a parameter of the MI in realtime. Enter “Simulate” mode, move or rotate the object in the main viewport (not in the blueprint window).

Results : Moving/Rotating the object breaks the MI pointer, therefore the realtime update stops. It even looks like the material get backs to its default settings.

Expected : Expected behavior would that the MIC is still updated properly even if the user move/rotate/scale the object in the scene.


My current blueprint graph :

Hi Fabrice,

I have been able reproduced the same issue you are having. A work around for this issue is to move the section of the blueprint that is set to work with begin play into your construction script. Also I have put in a report on this issue.

Cheers