Niagara Emitter editor forgets Timeline playback ranges

UE - Niagara - Sep 14, 2020

This seems to only affect an emitter and not a system asset. ...

Editor crashes on user project when attempting to spawn an actor from a struct within user's project.

UE - Networking - Sep 23, 2015

Editor crashes when attempting to spawn an actor from a struct within user's project. Frequency: 5/5 crashreporter: [Link Removed] ...

[Feature Request] CVars for HISMC

UE - World Creation - Worldbuilding Tools - Foliage - Jun 18, 2021

Currently some (if not all or most) foliage CVars affect both foliage and HISMC. It would be nice to split this so that users can change the values of one without affecting the other. ...

Only exactly matching structures are considered compatible

UE - Gameplay - Blueprint Compiler - Dec 31, 2022

in UE 5.0.2 open TestActor Blueprint compile correct.  but in UE 5.1 Blueprint Compile not correct ...

DestructibleMesh does not correctly effect vertex color of material.

UE - Simulation - Physics - Destruction - Oct 10, 2017

Destructible Mesh does not correctly affect vertex color. ...

Selected item in property matrix cannot be deselected

Tools - Aug 23, 2016

When selecting an item in the Property Matrix you cannot deselect. This affects changes you make that are supposed to be across all items selected by making them only affect the item selected. ...

Geometry Collection Cache Mode recording that has shattered on the ground shows that Collection Freeze when switched to Play and simulating again

UE - Simulation - Physics - Oct 24, 2022

Cache Mode: record seems to simulate fine, in Cache Mode: Play, the object does not simulate fracturing Repro Rate: 5/5 ...

Material Layers Relink Button Missing

UE - Rendering Architecture - Materials - Mar 26, 2025

The Relink button is missing (as are the Save Sibling and Save Child buttons) on Material Instances that use Material Attributes Layers in 5.5. ...

TSR ghosting when see through translucent wall

UE - Graphics Features - Feb 7, 2023

see through a translucent material will cause ghosting  This issue did not occur in 5.0, it occurs when using TSR on UE 5.1 or later. ...

Large brush sizes causes hitching in Landscape Sculpt mode

UE - Graphics Tools - Terrain - Landscape - Jan 19, 2023

In my case I used the erosion brush and smooth brushes.  Not a regression checked in Version: 5.1.0-23058290+++UE5+Release-5.1 ...