UObjects returned from "Get Item Children" in a TreeView widget causes an engine crash, due to invalid pointers

UE - Foundation - Core - UObject - Jun 9, 2020

UObjects returned from "Get Item Children" in a TreeView widget causes an engine crash, due to invalid pointers. User has proposed the following fix: The best fix is probably such: When Slate list ...

When the default values of Instanced variables are changed in Blueprint, the variables of actors on the level don't follow the default values

UE - Gameplay - Sep 20, 2022

When the default value of an Instanced variable defined in C++ is changed, it is not reflected in the default value of an Actor placed on a Level. In the reproduction procedure, when the default v ...

Unable to locally rotate individual foliage

UE - World Creation - Worldbuilding Tools - Foliage - Jul 14, 2017

Unable to locally rotate individual foliage. This seems to have been a limitation of the foliage tool from it's creation. Licensee Description: I would like to ask if there is any way how to preve ...

Unexpected behavior when Actor Parenting in the World Outliner of a WP map

UE - World Creation - Worldbuilding Tools - World Partition - Nov 23, 2021

Licensee reports the following in the UDN: There seems to be some other erratic behavior when using parenting in world outliner (i.e. drag and drop one actor on another one in world outliner).Since ...

[AI] Editor crashes when editing values of an FInstancedStruct's TArray inside of a BP

UE - AI - Jun 30, 2023

While using a custom struct that contains a TArray member variable with FInstancedStruct, you cannot edit it in the editor without a crash. Other structs and types work as expected even if they deri ...

Foliage LOD's Screen Size Can't be Set Higher Than 1.5

UE - World Creation - Worldbuilding Tools - Foliage - Jan 31, 2019

Foliage LOD's Screen Size Can't be Set Higher Than 1.5 Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 4827620, 5.1 CL 20024840 ...

SetOneWayInteraction functionality has no effect on the simulation

UE - Simulation - Physics - Nov 11, 2022

Calling SetOneWayInteraction on a BodyInstance has no effect within the physics engine. The state of the flag is passed in to Chaos but nothing actually uses the value once it is there. It is expe ...

Build geometry removes spline component visibility

UE - Gameplay - Components - Jan 23, 2023

A spline component will become invisible after building geometry with the spline actor in the level. This issue is occurring in //UE5/Release-5.1 @ Binary CL 23058290 This issue is NOT occurring ...

Getting Fullscreen or Windowed Resolutions doesn't fully execute on Linux

UE - Rendering Architecture - RHI - Oct 28, 2019

When using "Get Supported Fullscreen Resolutions" on UE when built with Vulkan, no values are printed out. This is an issue with any platform that builds UE with -vulkan, not just Linux.  In Engine ...

Editor crash when saving a level instance in a folder with the same name as the level

UE - World Creation - Worldbuilding Tools - Level Instances - Jan 27, 2023