Edit Condition does not work properly when the structure is used as a key for Map

UE - Framework - Blueprint - Jun 19, 2025

When the structure is used as a key for Map in Blueprint, Edit Conditions does not work properly. It will be updated when you move the focus to a different location(ex. a component) and click the v ...

Nanite Skeletal Meshes Invalidate VSM

UE - Graphics Features - Nanite - Sep 17, 2025

Nanite Skeletal Meshes will always invalidate VSMs, even with their Shadow Cache Invalidation Behavior set to Rigid. This does not match the behavior of non-Nanite Skeletal Meshes. ...

Inconsistent Behavior in TextureLODGroups when setting NumStreamedMips=0

UE - Rendering Architecture - Jan 8, 2026

A licensee has reported that it is not possible to disable texture streaming of a given TextureLODGroup by setting "NumStreamedMips=0" in their device profiles. Currently, using 0 results in the sam ...

GPU Particle Collision changes based on Normal Intensity on Colliding Surface

UE - Graphics Features - Jun 18, 2015

Increasing the intensity of a Normal Texture on a colliding surface will cause the collision of GPU particles to behave strangely, looks to be falling through floor, when you are using a Constant Ac ...

Attaching a Skeletal Mesh by setting it's Parent Socket causes the mesh to be offset and rotated

UE - Gameplay - Oct 9, 2015

Attaching a Skeletal Mesh by setting it's Parent Socket causes the mesh to be offset and rotated User Description: I still need to test using the BP you recommended. I tried again using the charac ...

Margin Variable cannot be edited while collapsed within a data table

Tools - Feb 4, 2016

If a struct has a variable of type Margin and a data table is created based on the struct, the Margin variable will not be editable while collapsed within the data table. ...

Spawn actor does not recognize changes to string/name variables

UE - Gameplay - Blueprint - Aug 28, 2015

Spawn Actor from Class does not accept new values to exposed variables that are altered upon spawn. ...

'HighResShot 2' is not taking a screenshot for a packaged project

UE - Graphics Features - Mar 19, 2015

When you attempt to take screenshot in a packaged project with the Console Command 'HighResShot 2'. This command works in editor but not in a packaged project. Issue with packaging in Main CL# 248 ...

Changing the directional light from stationary to movable causes the mobile preview to show dark

UE - Graphics Features - Nov 5, 2014

When Changing the Light source in the Sci Fi Hallway from stationary to movable, the room will become dark on Mobile preview. ...