Blueprint Data Loss with Certain Variable Names

UE - Gameplay - Blueprint - Jul 21, 2020

Certain characters within blueprint variables names will cause data loss when duplicating an actor instance. For example if a variable name contains '(', '{', or '[' it doesn't retain the variable's ...

[Landscape] Multiple Level Instances with Landscape causes duplicate GUID issues.

UE - LD & Modeling - Terrain - Landscape - Jun 18, 2020

Loading the same level twice through Load Level Instance BP Node will cause issues with levels containing Landscape as they will end up with the same GUID and the underlying systems do not support t ...

Custom Transition Notification Events do not update in the Event Graph when their name is changed in the Locomotion State Machine

UE - Anim - Runtime - Apr 14, 2020

It seems like the name will not update for the already place node automatically, however if a new one is created, the old name no longer appears in the node list and only the event node with the cha ...

Unable to select Foliage in the World Outliner

UE - World Creation - Worldbuilding Tools - Foliage - Mar 13, 2020

Foliage is not an asset that you can select through the World Outliner and the "Select" button in Foliage Tool is not working for this case. If you create new foliage, it will be set to scale 0 and ...

Dependent modules, compiled from editor, link to wrong versions

UE - Platform - Linux - Aug 2, 2019

The project consists of 2 modules, "ReloadBug" and "DependentModule." DependentModule has a one-way dependency on ReloadBug, and ReloadBug is the primary game module. On module load, DependentModule ...

Component deletion on net dormant actors doesn't replicate properly

UE - Networking - Jul 11, 2019

Deleting a dynamic component on an actor that's currently net dormant doesn't replicate the deletion to clients, even if FlushNetDormancy is called. This is inconsistent with adding components, whic ...

Using Interpolative Animation Data into 'Make Dynamic Additive' gives warning "Trying to play a non-additive animation into a pose that is expected to be additive in anim instance"

UE - Anim - Runtime - Jun 6, 2019

Feeding Interpolative non-additive Data into Make Dynamic Additive gives a Warning "Trying to play a non-additive animation  into a pose that is expected to be additive in anim instance" AnimBluepr ...

UBX Collision Rotation Is Set Incorrectly on FBX Import

UE - Editor - Content Pipeline - Import and Export - Dec 4, 2018

Imported FBXs that use UBX will import their collision rotation incorrectly. You can see this when scaling the collision non-uniformly.  Found in 4.20 CL# 4369336, 4.21 CL# 4541578, and 4.22 CL# 46 ...

Child Actors do not replicate to clients when running project with "-game" command

UE - Networking - Aug 7, 2018

Child Actors do not replicated properly to clients when running a project using the "-game" commandline argument. This does functionality does work properly in PIE and in a cooked build however. Re ...

Windows registers touch events twice - Once as mouse click

UE - Editor - UI Systems - Slate - Nov 28, 2017

When tapping on a button with a touch monitor, it is registered as two inputs. There was an issue on win7 where touch inputs were counted as touches and clicks. This seems to be the same issue on wi ...