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 ...

DataTable with structures containing TArray and TMap keeps increasing memory while no rows are selected

UE - Editor - Workflow Systems - Apr 18, 2023

When using a DataTable based on a structure that includes TArray or TMap, if a row is not selected, the memory usage will continue to increase. This is because in SDetailsViewBase::Tick, ForceRefr ...

Ensure undoing pin split - Found K2Node_CallFunction_429 ('K2Node_CallFunction') that does not belong to EventGraph.

UE - Gameplay - Blueprint Editor - Sep 15, 2017

REGRESSION: Yes, does not occur in 4.17.2 Ensure occurs when undoing the splitting of a pin. ...

Custom Node interprets MaterialAttributes inputs as float3

UE - Rendering Architecture - Materials - Dec 8, 2022

It seems that the Material Editor's Custom nodes don't handle inputs of type FMaterialAttributes correctly, and instead interpret them as float3. Using Material Attributes as an input to a Custom E ...

Only exactly matching structures are considered compatible

UE - Gameplay - Blueprint Compiler - Dec 31, 2022

in UE 5.0.2 open TestActor Blueprint compile correct.  but in UE 5.1 Blueprint Compile not correct ...

Exported DataTable as CSV includes a unnecessary string of random characters for Columns

Tools - Aug 12, 2016

Exporting DataTable to CSV will include a string of random characters. ...

The nativized 'Array_Get' custom thunk implementation fails to properly initialize the item returned in the invalid index case.

UE - Gameplay - Blueprint - Apr 19, 2018

FCustomThunkTemplates::Array_Get() fails to properly initialize a default item when the index is invalid: Item = U{}; That will leave the item uninitialized (e.g. UDS types). Should be using the ...

Soft Object Reference Pins can't be reset to None

UE - Gameplay - Blueprint Editor - Dec 10, 2020

Soft Object Reference pins on Blueprint nodes can't be reset to None once an object reference has been set.  ...

Specifying a object type variable in a Sequencer event track payload asserts

UE - Anim - Sequencer - Feb 21, 2017

Specifying a object type variable in a Sequencer event track payload asserts ...

"Fill Data Table from CSV File" crashes packaged project.

Tools - Sep 18, 2018

Using "Fill Data Table from CSV File" node in packaged project crashes instantly.  User acknowledges that they are misusing this node and requests that limitations are documented. (Editor only Tool ...