When rendering a reflection capture, the lightmap may be rendered without finishing streaming.

UE - Graphics Features - Oct 5, 2021

This problem occurs when you do a lighting build. It does not occur when the reflection capture is done by itself. ...

GPU Crash may occur when using Nanite Tesselation on landscape with several shadow casting local lights

UE - Graphics Features - Nanite - May 5, 2025

The GPU may time out in NaniteSplit when drawing VSM shadows for Nanite Tessellated landscape with in a scene with several local shadowed point lights. The issue doesn't reproduce in 5.6, likely to ...

SetTextureParameterValue stopped working with Dynamic Material Instances (from Blueprints)

UE - Graphics Features - Mar 28, 2016

Textures in Post Process Blueprints do not update with Dynamic Material Instances. Scalar and Vector Parameters update as expected, but Textures do not. Note This was attempted with both a materi ...

Converting Int to Byte to Enum crashes editor during PIE

UE - Gameplay - Blueprint - Jan 28, 2016

Converting Int to Byte to Enum crashes editor during PIE. Frequency: 3/3 Crashreporter: N/A ...

Projects crashing on launch after converting from 4.7.3 to 4.7.4

UE - Gameplay - Blueprint - Apr 3, 2015

A couple users have reported a crash when opening their 4.7.3 project in 4.7.4. From MikeB:https://answers.unrealengine.com/questions/205043/473-to-474-project-crash-on-startup.html The guy is hit ...

Handle fracturing a destructible mesh when the source mesh has been deleted without a crash.

UE - Simulation - Physics - Destruction - Jul 13, 2015

When attempting to fracture a destructible where the source static mesh has been deleted we get a crash in APEX. APEX can't seem to find any root leaf nodes to begin fracturing upon. This does not ...

Non-blueprint ed graphs need to clean up their deprecated pins

UE - Gameplay - Blueprint - Aug 3, 2016

Old UEdGraphPins are not being removed from non-blueprint assets. ...

Crash when double clicking a level in Content Browser to open it

UE - Editor - Workflow Systems - Apr 19, 2016

Landscape Mode automatically turns on Game View in Viewport

UE - LD & Modeling - Terrain - Landscape - Oct 31, 2016

Landscape Mode automatically turns on game view in the level Viewport. Regression (yes) issue (does not) occur 4.13.2 ...

Editor Crashes When Count on Mid Node is Less Than 0

UE - Gameplay - Dec 29, 2016

The editor crashes when the Count parameter passed into the Mid function is < 0. There is an assertion check(Count >= 0); in FString Mid in UnrealString.h, but an error message would be expected ...