Editor crashed on exporting a skeletal mesh twice after garbage collection occurs

Tools - Sep 21, 2017

Issue was occurring with wildly varying repro steps, after speaking to Jurre and enabling gc.CollectGarbageEveryFrame 1 it was easy to conistenty reproduce this issue. note: I was getting this iss ...

Changing the name of a GameMode Blueprint that is set as the Default in Project Settings and then clicking the Project Settings Default GameMode dropdown will crash the editor

Tools - Jul 7, 2015

Changing the name of a GameMode Blueprint that is set as the Default in Project Settings and then clicking the Project Settings Default GameMode dropdown will crash the editor. No crash report is ge ...

Screen space reflection flickering

UE - Graphics Features - Nov 26, 2019

Flickering is occuring when using a reflection material with screen space reflection enabled. Did not start occuring until 4.19 and beyond.  Tested in: 4.23.1 CL#9631420, 4.24 P3 CL#10283392, 4 ...

Visual discrepancy appears with local position offset while mipmaps are enabled

UE - Graphics Features - Oct 20, 2017

There is a visual discrepancy appears with the local position offset while mipmaps are enabled, when using a custom node that takes information from the local position node, with a texture that cont ...

Shadows are cast by meshes that have "Self Shadow Only" enabled while "Ray Tracing" is enabled with DX12

UE - Graphics Features - Lumen - Nov 6, 2019

Meshes that have "Self Shadow Only" enabled are still casting shadows if ray tracing is enabled with DX12. Found in 4.23.1 CL#9631420 Reproduced in 4.22.3 CL#7053642, 4.24 CL#10053396, 4.25 Main CL ...

Packaging/launching 2D Side Scroller template for HTML5 results in Black Screen on browsers

UE - Platform - Mobile - Oct 30, 2018

Packaging or Launching the 2D Side Scroller template without making any edits results in issues that differ by browser. Firefox : A black screen appears (see screenshot) Chrome : 1/4th of the scre ...

UMG Animations Scale Retainer Boxes When Only Translating them

UE - Editor - UI Systems - Feb 28, 2020

When translating a retainer box in an UMG animation the scale of the retainer box is also affected. Attached is a 4.23 example project. Found in 4.24.3 CL#11590370 Reproduced in 4.23.1 CL#9631420, ...

Bluerpint nativization failed for calling TMap::Find function of a map container with an enum type key

UE - Gameplay - Blueprint - Oct 2, 2020

Followings are nodes in the repro project. [Image Removed] Here's a generated code of the BPvoid ANewBlueprint_C__pf1010915279::bpf__NewFunction_0__pf() { uint8 bpfv__CallFunc_GetInt_NewParam ...

Twinmotion processes may not fully close on Mac after exiting program

TM - Core - Aug 14, 2024

Reported to support in SF [Link Removed] and reported on reddit at [Link Removed]. For Twinmotion 2024.1 on Mac, some users are reporting that Twinmotion processes are still running after closing t ...

Imported FBX causes a crash

Tools - Apr 22, 2016

Edit MattK: This seems like more of a cooking issue than an fbx issue. The crash is related to nav collision When adding a FBX import into your project, if you do not close the project out and ope ...