Crash when using both tessellation and virtual texture on a landscape material

UE - LD & Modeling - Terrain - Landscape - Feb 11, 2020

When a landscape is set up to use runtime virtual texturing. If it uses a material that writes to a runtime virtual texture and has tessellation enabled. Then we see a crash and the log reports: ...

Character jumping can become permanently blocked under subpar net conditions

UE - Gameplay - Player Movement - Dec 8, 2023

Problem Under laggy networking conditions, if the user rapidly presses the jump button the character can at some point stop responding to jump input. Initial Thoughts It looks like there's a logi ...

Cannot Add Collision to an EQS Testing Pawn

UE - AI - Jan 6, 2016

Attempting to add collision to an EQSTestingPawn class is not possible, as the inherited capsule component seems to override any new collision. Simulating with the inherited capsule will cause the P ...

Subsurface Profile - Full resolution skin shading blows out results from ambient cubemap

UE - Graphics Features - Jan 12, 2017

Since the change to Subsurface Profile shader in 4.14 their use with ambient cubemaps have started giving blown out results that come back either white or very desaturated in the viewport. The curre ...

Datasmith files containing special characters do not import correctly in Unreal

UE - Editor - Content Pipeline - Datasmith - Exporters - Oct 10, 2018

User is experiencing an import issue with a 3DS Max 2019 file. Their workflow is as follows and works for all their assets but this one:Original file created in revit 2019Import revit link to 3dsmax ...

Interactions in the Menu are not working as expected in VRTemplate

UE - Platform - XR - Nov 17, 2022

Interactions in the Menu on VRTemplate (and I suspect that style of menu interaction in general) do not function as expected. This issue was reproduced several times (5/5), both with a VR headset an ...

Translucent materials with Modulate blend mode disappear with down-res translucency enabled

UE - Rendering - Graphics Features - May 28, 2024

Reported from this UDN: https://udn.unrealengine.com/s/question/0D5QP00000MLlco0AD/active-dtr-doesnt-render-beforedofmodulated-materials?fromCase=1 The problem is that, except in very specific circ ...

Issue where some colors are missing in some materials created by importing MaterialX files

UE - Editor - Content Pipeline - Import and Export - Apr 1, 2024

From user: Comparing UE, Arnold, Vray and MaterialXView that have MaterialX files imported, some materials of UE clearly look different from other renderers. Looking into this issue, we found that ...

Engine\Build\IOS includes an expired certificate

UE - Platform - Mobile - Jan 2, 2019

\Engine\Build\IOS\AppleWorldwideDeveloperRelationsCA.pem is out of date. This causes a warning to appear when submitting app.  Workaround: Install latest WWDR ( https://answers.unrealengine.co ...

Include option to use ViewTarget's location when determining relevancy

UE - Networking - Jan 26, 2024

When determining relevancy for an actor based on distance, the location of the player's view point is always used if it is available, rather than the location of the view target (see FNetViewer and ...