Static variable declaration causes unresolved external errors when calling FRootMotionMovementParams functions

OLD - Anim - Jan 11, 2017

Attempting to call a FRootMotionMovementParams function results in an unresolved externals error on compile because of the static FVector RootMotionScale variable. Workaround: In source, removing s ...

The Rotate Around Point Niagara module does not account for current particle position

UE - Niagara - Oct 16, 2019

The rotate around point module no longer adds in particle position, so it does not account for other forces and modules effecting the particles, and will only spin in a circle by default. The user c ...

Niagara Parameter Reference Counts do not include Renderer bindings

UE - Niagara - Feb 3, 2021

Renderer bindings aren't being accounted for in a parameter's reference count. ...

UMG property binding fixup for real numbers doesn't always work

UE - Editor - UI Systems - UMG - Apr 5, 2022

For UMG delegates, we currently have a fixup pass that ensures that bound functions match the signature of the native delegate. However, the fixup appears to use the wrong function name, which cause ...

Conditional Gameplay Effect triggers a breakpoint in a networked client

UE - Gameplay - Gameplay Ability System - May 23, 2023

It seems to be related to the removal tag requirements of the GE_Test1_2 gameplay effect, which does work but still gives the pending removes error. ...

Custom Water Body does not work with its own Distance Culing

UE - Graphics Tools - Terrain - Water - Sep 14, 2023

WaterBodyCustom seems not to work with Distance Culling settings on its own actor, either Draw Distance/Never Distance Cull or Allow Cull Distance Volume.  It only can be controlled by the CullingD ...

Ctrl + z still active in PIE

Tools - Jan 20, 2016

Users can select ctrl + z while playing in Editor causing PIE to stop and undo last change, often freezing the editor temporarily, and sometimes causing a crash. Workaround: This does not occur if ...

Morph Targets broken importing some untriangulated meshes with FBX

UE - Graphics Features - Jun 5, 2017

Morph Targets broken importing untriangulated meshes with FBX ...

Post Process AnimBP is no longer initialized in Persona Viewport

OLD - Anim - Jul 20, 2017

Post Process AnimBPs used to be processed in the persona viewport. This could have been intentional. Occurs on? 4.14 - 3249277 - NO 4.15 - 3450819 - YES 4.16 - 3466753 - YES 4.17 - 3545186 - YES ...

Slow response on clicking on InstancedStaticMeshComponent with many elements when using IME

Tools - Aug 7, 2017

When clicking on InstancedStaticMeshComponent with many elements, Editor memory usage increases and editor freezes until the operation is finished. The wait and memory usage get much worse when usin ...