Slate Widget fails to compile once added to a new project

UE - Foundation - Core - Jan 28, 2015

Slate Widget fails to compile when you add it to a new project. Expected as a user that anything in that default list should be able to be added and compile fine without making any changes. Compil ...

In 5.7, a Sequencer that contains a Spawnable ChaosCacheManager will crash the Engine on EndPlay

UE - Runtime - Simulation - Nov 30, 2025

In 5.7, a Sequencer that contains a Spawnable ChaosCacheManager will crash the Engine on EndPlay. The licensee has reported, and I've confirmed, that this behavior started in 5.7. I've confirmed thi ...

Animation to Ragdoll: Character flips direction for 1 frame

Docs - Samples - Mar 8, 2016

Character rotates 90 degrees abruptly for one frame so that it appears to "flip-flop" for that one frame between Death animation and conversion to ragdoll physics This is in relation to [Link Remov ...

Crash on BP recompile after deleting struct property with instanced object

UE - Gameplay - Blueprint Compiler - Jan 5, 2023

A user has reported a crash that is reproducable in a clean project in UE 5.1.0 release. It involves a struct with an instanced object. The crash occurs after deleting a property of that struct type ...

Distances do not match on display 2.6 of the Math_Hall in ContentExamples

Docs - Samples - Sep 22, 2016

This could be a rounding error but if they are both representing the same distance they should match. Maybe truncating a few decimal places and rounding could work. ...

Rotation gizmo affects post processing and reflections in the scene

Tools - Jul 6, 2015

This has been around since public launch. The rotation widgets emissive material will cause trouble with the post processing and reflections in the scene. Especially troublesome if you with bloom an ...

Automotive Materials - ClearCoat Specular Artifact with Saturation ~1

UE - Graphics Features - Mar 8, 2023

[Link Removed][Link Removed] ...

KiteDemo: Bookmark 1 - bird visuals and audio missing

Docs - Samples - May 3, 2017

While testing KiteDemo for 4.16 Sample Pass – //UE4/Release-4.16 CL 3420042 in Binary – I found that aside from the incredibly low FPS, some of the Bookmarked camera locations have issues. In the fi ...

Sun is rendered badly or not showing on mobile devices.

UE - Platform - Mobile - Jan 27, 2015

When you deploy the First Person Template to a mobile device, the sun will appear badly rendered or not rendered at all. Tested on iPhone5S, iPad Air, GalaxyS3 Mail, Nexus 6, iPad Air 2, Nexus 5, G ...

Panning in blueprints does not appear to be affect by windows pointer speed

Tools - Nov 14, 2016

The windows mouse speed settings appear to have no effect on the panning speed in blueprint. ...