Packed level blueprint does not behave as noted in documentation.

UE - World Creation - Worldbuilding Tools - Nov 28, 2022

In the documentation page: [Level Instancing in Unreal Engine | Unreal Engine 5.0 Documentation|https://docs.unrealengine.com/5.0/en-US/level-instancing-in-unreal-engine/] it is mentioned that: [ ...

Specular highlight and roughness issue on clearcoat material with second normal at certain view angles

UE - Graphics Features - May 21, 2025

Specular highlights on non-Nanite meshes with a clearcoat material that has the second normal enabled will disappear at certain view angles. This can be worked around by adding a constant node to th ...

[CrashReport]Assertion failed: InitState == EWorldPartitionInitState::Uninitialized [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\WorldPartition\WorldPartition.cpp] [Line: 1485]

UE - World Creation - Worldbuilding Tools - World Partition - Sep 12, 2023

Generated from CrashReporter Logs can be obtained via Crash Reporter ...

Select node causes HTML5 project to crash in browser

UE - Platform - Mobile - Nov 24, 2015

Select node causes the project to crash on HTML5. Expression (ExportMap.IsValidIndex( Index.ToExport() )) failed in D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.10\Engine\Source\Runtime\CoreUO ...

"Split Struct Pin" breaks functionality of Transform Bone node

OLD - Anim - Jun 22, 2015

Using the "Split Struct Pin" right click option on the rotation pin breaks the functionality of the Transform Bone node in Animation Blueprints NOTE: I noticed the Roll/Pitch/Yaw are in a differen ...

Duplicating an actor that calls a custom event from another actor receives compile error

UE - Gameplay - Blueprint - Jun 23, 2015

Duplicating an actor that calls a custom event from another actor receives compile error until the node is removed and replaced. ...

Opening Gameplay Debugger while in PIE removes print string output from screen in subsequent PIE modes

UE - AI - Apr 23, 2015

If a user opens gameplay debugger ( ' pressed while in PIE), all print string outputs to screen disappear, and will no longer appear during any PIE session until editor is closed and re-opened. Wo ...

Chinese Characters causing the Editor to crash when using them in a blueprint

UE - Editor - UI Systems - Localization - Dec 4, 2014

When using Chinese characters in Blueprints, it will almost always see a crash when saving the project and PIE. This only occurs in the 4.6 release build. It does not occur in Main. Crash Report: ...

Very difficult to drag off of nodes on touch screen laptops.

UE - Gameplay - Blueprint - Jan 30, 2015

When using a touch screen laptop, it is very difficult to drag off the exec of nodes. I was able to drag off of a node 2 times after trying around 25 times. I was using a ComPat touch Screen laptop ...

Procedural Mesh Component Blocks Level from Saving

UE - Gameplay - Components - Aug 29, 2016

When a blueprint is added to a level that contains a procedural mesh component the level is unable to save. The error message that pops up is attached as a screenshot. Edit PatrickD (08-29-2016): C ...