When copying category properties, all the EditConst flags are not checked. This overrides variables that should not be written.

UE - Editor - Workflow Systems - Mar 12, 2024

If you create two actors that have the same structure of variables in a category, and you try to copy the category variables of one actor into the other, variables that have ReadOnly/EditConst speci ...

Water is missing or appears in wrong places due to incorrectly rendered WaterInfoTexture.

UE - Graphics Tools - Terrain - Water - Jun 16, 2025

Water is missing, appears in strange blocks, or appears in wrong places due to incorrectly rendered WaterInfoTexture. The WaterInfoTexture is part of the WaterZone actor. ...

Collision Problems on Meshes with Collision Complexity Setting UseComplexAsSimple

UE - Simulation - Physics - Dec 20, 2018

Collision does not appear to work properly on a static mesh that is set up with UseComplexCollisionAsSimple. ...

OVR Metrics Tool reporting a memory leak for Oculus Quest

UE - Platform - XR - Sep 5, 2019

The quest appear to have a memory leak. This can be shown when using the OVR Metric tool. When launching an app onto the device it appears that he memory usage goes up every 20 seconds or so. ...

Crash when fast moving Character objects has Teleporting enabled

UE - Simulation - Physics - Character - Nov 28, 2022

Reproduced 3/3 times. Issue does not occur in //UE4/Release-4.27, so Confirmed Regression. ...

Instigator is not set properly in Lyra health change callbacks

UE - Content - Sample - Mar 17, 2023

LyraHealthComponent has an OnHealthChanged callback that is executed whenever a character takes damage. One of the parameters is Instigator, but that is never set properly in the current version of ...

CommonUI Analog Cursor + Enhanced Input triggers cause triggers to get stuck when alt-tabbing

UE - Editor - UI Systems - Mar 29, 2024

Came out of [Link Removed] and is related to this one too I think that this is signaling that we need better solutions for input consumption in the engine honestly. This is a constant pain point ...

Blueprint fails to compile when adding new member to struct that is an input parameter of implemented interface function

UE - Gameplay - Blueprint - Jun 3, 2016

Adding variables to a structure that is an input parameter of an interface function causes a compile error in any blueprint that implements the interface until the interface is recompiled. Compile ...

Persistent level containing sublevels with HLODS invalidate after saving.

UE - World Creation - Worldbuilding Tools - HLOD - Feb 22, 2021