Points on a FRuntimeFloatCurve in an instance of a Blueprint that inherits the curve from its parent are reset when reloading the level it is in.

UE - Gameplay - Dec 14, 2017

In this situation, a FRuntimeFloatCurve UPROPERTY is stored in an Actor Component called CurveComponent. A Blueprint of MyActor (A subclass of AActor) is created and the CurveComponent is added to t ...

"Enabled per poly collision" under "Support compute skincache" is ON causes a crash at runtime

UE - Simulation - Physics - Aug 16, 2018

It seems that "Enabled per poly collision" with "Support compute skincache" causes a crash at runtime immediately. We can easily reproduce it with ContentExample. The logs at the crash timing... L ...

Stationary/Movable Lights render based on distance from World Origin in Orthographic Camera View

UE - Graphics Features - May 20, 2016

When using the Orthographic Camera view (such as that used with the Paper2D Template) any lights that are distant from the world origin will start to fade out as if they are being culled. The distan ...

Unable to select foliage by left clicking after 1.5 k foliage meshes placed

UE - World Creation - Worldbuilding Tools - Foliage - Aug 28, 2017

When using the foliage tool, once the mesh count reaches around 1.5k and higher you will be unable to select individual meshes by using the mouse. The lasso tool and the select all tool work as inte ...

[CrashReport] UE4Editor_GraphEditor!SGraphPin::GetTooltipText() [sgraphpin.cpp:1100]

UE - Editor - UI Systems - Slate - Sep 7, 2017

This is a common crash that has affected over 60 users since at least 4.16 User DescriptionsDeleted a SET variable Source Context 1091 FText SGraphPin::GetTooltipText() const 1092 { ...

Possession is not replicated properly to some clients

UE - Networking - Nov 8, 2018

A user has reported an issue where Possession replication or Character Movement replication, unsure of which, is not working properly for some clients. It seems to work fine for the first client but ...

Changing the engine quality settings will cause the editor to crash

UE - Graphics Features - Feb 27, 2020

Changing the engine quality settings to low or medium will cause the editor to crash  This was tested in 4.24.3 @ CL 11590231 and doesn't occur, so this is marked as a regression.  Mac Environme ...

NormalizePackageNames() should interpret 'exclude developer folders' to also exclude packages in ExternalActors and ExternalObjects

UE - CoreTech - Oct 14, 2022

In NormalizePackageNames() (PackageUtilities.cpp), there is a PackageFilter parameter, which can be set to exclude developer packages (NORMALIZE_ExcludeDeveloperPackages). The code only checks the b ...

Warnings (TEnumAsByte is not intended for use with enum) when packaging with Blueprint Nativization method set to Inclusive

UE - Gameplay - Blueprint Compiler - Feb 16, 2017

User gets the warning below after trying to package a new VR template if Blueprint Nativization is set to "Inclusive" Warning: "THelper: Packaging (Windows (64-bit)): xgConsole: c:\program files (x ...

XR -ARKit - Tracked Planes are not attached to the real world objects when moving the camera around

UE - Platform - XR - May 22, 2024

When the user attempts to place an object on a tracked plane it slides around the environment not staying in the expected place. Using the ARDebugcheck project with the show planes option you can se ...