Unreal Engine Issues

Engine crashes while attempting to resimulate procedural foliage volume with target layer set on landscape proxies

If a procedural foliage volume attempts to use the "target layer" feature and resimulate while encompassing a landscape proxy, the editor will crash. Frequency: 3/3 Crash Report: [Link Removed] ...

Strange Behavior of Array of Structs default values

When the default values of a struct are set in code and an array of the struct type are added as a class variable, creating a blueprint of the class with show array elements with the "reset defaults ...

Function calls inside destructor are not called when expected.

Functions called in the destructor are not being called properly. Setting a call to AddOnScreenDebugMessage is displayed at the start of PIE rather than when the actor's destroy is called. ...

Hot reload reported as failed in Visual Studio for projects opened in the Editor after having hot reloads performed successfully previously

If a project is opened in the Editor after previously having a hot reload performed, any subsequent hot reloads started from Visual Studio will result in the build being reported as failed in Visual ...

Fix up redirectors can fail if some packages were already checked out

Niagara color picker user parameter preview no longer updates until confirmation

Starting with UE 5.4, the Color Picker Tool no longer updates preview values in real time for certain editor windows like Niagara when working with User Parameters. This behavior is a regression fr ...

SIGSEGV: invalid attempt to access memory at address 0x10

User reports crash occurs when stopping a simulation or closing the editor Crash reporter link: [Link Removed] ...

Misleading error message while attempting to drag in a BlueprintCallable Function into an Event Graph

An error message informs the user that a function does not have the BlueprintCallable keyword if the same function is using a  native to blueprint communication keyword. The function/keywords are b ...

Particle Random Value is the same for all particles with a Niagara Mesh Renderer

A material using the Particle Random Value node returns the same value for every particle drawn by a Niagara Mesh Renderer. Particle transforms are not affected, only the random value. This happens ...

Filling Vertex Colors does not propogate down to other LODs

The original reported behavior called out that filling individual channels did not apply to LODs when LOD Model Painting = False. With changes implemented in 4627582, the initial fill will reach LOD ...