bDisableExposure Exposure bias on Mobile

UE - Platform - Mobile - Oct 12, 2018

There is this new variable. bDisableExposure which is set true when Feature level isn't SM5. Exposure bias should be supported on other platforms too. PR: https://github.com/EpicGames/UnrealEngine/ ...

[AI] Editor crash when moving BT nodes if the BB has a BlackboardKeyType_Object with a null BaseClass

UE - AI - BehaviorTree - Feb 28, 2023

The editor crashes if a BT is changed while its Blackboard has an Object type key with its BaseClass set to None (null). There is no warning or log alerting the user that setting the BaseClass to No ...

Crash when after playing media that requires a different conversion shader

Media Framework - Sep 24, 2016

The pixel format conversion code in MediaTextureResource is currently reusing the global bound shader state for different pixel shaders. This is not supported. There needs to be one shader state per ...

Binary-only plugins are not usable without including .build.cs files

UE - Foundation - Cpp Tools - UnrealBuildTool - Jan 22, 2015

We should support not having a source directory at all, unless the plugin needs to be linked against. Related to [Link Removed]. See also: https://forums.unrealengine.com/showthread.php?53710-Prebu ...

Curve name cannot be changed when using FRuntimeCurveLinearColor

UE - Anim - Sequencer - Mar 28, 2017

When a custom data asset class have a FRuntimeCurveLinearColor defined variable, the curve name in the editor shows as "None" and cannot be edited. Regression: No - same behavior exists in 4.14.3 B ...

User created OSS plugins require modifying Engine now

UE - Online - Aug 24, 2018

This was discovered in live build and posted in UE Forums that based on changes to OSS, users (binary specifically) can no longer create their own OSS plugins as it requires modifying the Engine Sou ...

Altering Player Controller in Gamemode resets upon reloading project

UE - Gameplay - Blueprint - Nov 26, 2014

If a user sets the player controller to a custom Player Controller inside of a gamemode, then compiles, saves, and closes both the blueprint and the editor. Upon reloading the player controller in t ...

MDL imported from Substance Source with Datasmith causes a crash

UE - Editor - Content Pipeline - Import and Export - Mar 8, 2019

MDL downloaded from Substance Source causes a crash. This is reported on UDN by an Enterprise customer: https://udn.unrealengine.com/questions/487598/why-would-ue4-is-always-crashing-when-import ...

Crash when Enabling HDR in a Standalone Fullscreen Game

UE - Graphics Features - May 22, 2019

Enabling HDR with the r.HDR.EnableHDROutput command causes a crash in fullscreen standalone as well as packaged projects. This only happens with HDR monitors, following the same steps on a monitor t ...

WebM video format skips frames when seeking from code

Media Framework - Oct 22, 2019

Playing a video in the engine that is WebM format, results in skipped frames. This does not happen with other video formats supported in the engine. Attached are links to the WebM  videos used to te ...