Skeletal Mesh with Tessellated Material causes Excessive Blur

UE - Graphics Features - Nov 18, 2014

With a Tessellated Material, either Flat or PN Triangles, applied to a Skeletal Mesh when playing, the Mesh has excessive blur when in motion. If you use the same material and turn off tessellation ...

Packaging a plugin from Plugins Editor UI wipes the target folder before packaging

UE - Foundation - Cpp Tools - Plugin System - Sep 23, 2016

"Package Plugin" from Plugin Editor UI will wipe the target folder’s contents first then populate it with plugin files. User was expecting “Package Project” like behavior: Create a new folder in th ...

Adding array element of instanced meshes during simulation does not increase amount of elements in array

UE - Gameplay - Blueprint - May 9, 2016

Adding array element of instanced meshes during simulation does not increase amount of elements in array. Regression (No) issue (does) occur in 4.10.4 ...

Combo box does not function in packaged build

UE - Editor - UI Systems - May 10, 2017

The ComboBox (string) element for UMG is not correctly displaying, The array options do not appear and can not be selected, for the packaged build, while PIE behaves as expected. Regression: This ...

Crash when modifying InstancedStaticMesh transform in Blueprint Editor

UE - World Creation - Worldbuilding Tools - Foliage - Oct 20, 2017

InstancedStaticMesh component element mismatch between in-level and BP editor can cause crash when modifying transform in BP editor. This can happen when a user modified transform in-level actor's I ...

[Audio Insights] - Insights continues to display virtual sounds after they have stopped being active

UE - Audio - Audio Insights - Jan 27, 2024

Virtual loops continue to be displayed in Audio Insights even after the sound has stopped being active for certain cases. This also occurs when stopping PIE while a sound is virtual. The sound will ...

Nested level visibility track bug

UE - Anim - Sequencer - May 31, 2024

The Level Visibility tracks part of a Subsequence are turned off every time you save the Leve Sequence. It does not happen if Level Visibility tracks are added in the main Sequence. ...

Instigator is no longer automatically set when spawning actors from blueprint

UE - Gameplay - Blueprint - Aug 20, 2024

Actors that are spawned from blueprints will no longer have their instigator automatically set to the instigator that spawned them. This is a regression in 5.5, because in 5.4 and earlier a null Ins ...

Nanite Landscapes in Non world partition maps has missing sections

UE - Graphics Tools - Terrain - Landscape - Jul 23, 2025

Nanite in non world partition worlds builds with missing section, almost half the landscape is missing. Looking at the nanite overdraw as attached, it shows an interesting pattern. ...