ReplicatedUsing stops getting called after setting a value to nullptr.

UE - Networking - Oct 20, 2016

Eventually, the ReplicateUsing function called out for a UPROPERTY is no longer being called. After investigation, it appears that the data is making it from the Server to the Client, but that the d ...

Packaging Project with Nativize Blueprint Assets Prevents Overlap Events from Firing

UE - Gameplay - Blueprint Runtime - Mar 31, 2016

Currently, I have been unable to reproduce this issue outside of the user's project that is provided in the repro steps. Packaging a game that has the experimental feature Nativize Blueprint Assets ...

USkinnedMeshComponent::FindClosestBone does not respect bRequirePhysicsAsset parameter

OLD - Anim - Mar 20, 2017

A licensee has reported that the USkinnedMeshComponent::FindClosestBone function does not respect the bRequiresPhysicsAsset parameter, resulting in the bone returning bones that are not part of the ...

Saving SubLevel Using Levels Tab Destroys Map Build Data Registry

Tools - Apr 20, 2017

When a Sub Level is currently open (meaning it is listed as the persistent level in the levels window) and you save the level using the levels window the map build data registry will get destroyed. ...

[CrashReport] UArrayProperty::DestroyValueInternal

UE - Gameplay - Blueprint - Sep 14, 2017

This is a somewhat common crash that has affected multiple users in 4.17. User Descriptionstried to compile a blueprint after changing blueprint interface function definitions. Source Code 121 ...

Level Streaming Blocking Loads Do Not Work

UE - Gameplay - Jun 4, 2018

It is believed that If Should Block On Load is TRUE, the entire game should freeze up until the entire level is loaded. Then If Should Block On Load is FALSE, the game continues to play while the le ...

Interactions in the Menu are not working as expected in VRTemplate

UE - Platform - XR - Nov 17, 2022

Interactions in the Menu on VRTemplate (and I suspect that style of menu interaction in general) do not function as expected. This issue was reproduced several times (5/5), both with a VR headset an ...

Fracture Tool - Popup menu for tree items on the Geometry Collection Outliner is missing the option "Static" for setting "Initial Dynamic State"

UE - Graphics Tools - Modeling Tools - Oct 4, 2023

As reported by the customer in the related UDN case, when right-clicking a tree item on the Geometry Collection Outliner inside the Fracture Tool, the popup menu should display 4 options for setting ...

Data Table Enums Fail to import correctly

Tools - Jun 22, 2015

Enums are unusable in data tables for importing. They import solely as their default "zero" value (albeit with the name wrong - but that still "functions" fine). Sample enum: Dog, Cat, Bird Sample ...

No way to unregister BB observer as a response to being notified about BB key change

UE - AI - Mar 3, 2015

Currently when a BB observer gets notified about BB key change there is not way to tell the BB component to unregister said observer. The function called on observers should return a value indicati ...