Using Deferred Decal Material crashing Editor

Issue: Scene containing Deferred Decal Material crashing

System1: Win 10 Pro 64bit (Pre-Summer Update) i7-4790k / 32gb / gtx970 (375.86)
System2: Win 10 Pro 64bit (Latest Version) i7 860 / 16gb / 550Ti (nvidia 375.63)

Steps to reproduce in 4.14:

  1. create new project (blank, desktop/console, max quality, no starter content)
  2. activate Dbuffer Decals (Project settings / rendering / lighting)
  3. restart editor
  4. create material (material domain: deferred decal / blend mode: translucent / decal blend mode: Dbuffer Translucent Color / Input const 1.0 into albedo /opacity (doesn’t really matter tho))
  5. create Cube (Basic) & assign material

after these steps it gets unstable resulting in the editor to crash when: changing viewport size (F11) toggling viewport display mode. I`ve also had the case where creating a new brush with the material selected crashes the editor instantly but couldn’t get to reproduce this reliably.

log file

Hi akaChirsV,

Thank you for submitting a bug report. I have reproduced this issue and logged a report for it here: Unreal Engine Issues and Bug Tracker (UE-38709)

You can track the report’s status as the issue is reviewed by our development staff. Please be aware that this issue may not be prioritized or fixed soon.

Cheers,