Can change type of event dispatcher in Blueprint

UE - Gameplay - Blueprint Editor - Oct 2, 2018

It seems that with 4.20 users are able to change a dispatcher's type from Multicast Delegate to something else (float, int, etc.) Doing so will cause any node that references the dispatcher via call ...

Child Blueprint construction script runs before parent C++ OnConstruction

UE - Gameplay - Jun 25, 2019

When the order of construction is backwards it makes it impossible to have native objects set up components in OnConstruction, that a child BP Construction Script then has access to. Sometimes the C ...

QAGame projectile collisions are not working

UE - Simulation - Physics - Jul 3, 2017

I was not able to repro this with template projects in //UE4/Release-4.17. I was not able to repro the lack of collision to the same static mesh I shot at if I tried to run into it. That is why I me ...

Post Process Materials do not appear in Sequencer

UE - Anim - Sequencer - Jun 17, 2019

When Having a SkeletalMesh or Static Mesh, you can control Material Parameters directly. Something like that is missing for Post Process Materials. Matinee had a generic Float or Vector Track.If Se ...

Live: Crash when opening a blueprint who's component was edited in VS

UE - Gameplay - Blueprint - Oct 31, 2014

Added functionality to a blueprint component through code and built the project in VS. After a hot reload, I saved the blueprint and closed the editor. Reopening the editor and the blueprint cause ...

[CrashReport] Crash on FMaterialEditor::OnCanPromoteToParameter()

UE - Rendering Architecture - Materials - Jun 22, 2017

This is a common crash in the 4.16 release (affecting Windows and Mac). A log file is attached. Users have not provided descriptions so additional information is not currently available. Windows C ...

[CrashReport] Linux crash - FMonitoredProcess::Launch()

UE - Platform - Linux - Sep 14, 2017

This is an infrequent Linux crash occurring in 4.17.1. Callstack from Log[2017.09.06-15.26.30:028][666]LogLinux: Error: appError called: Assertion failed: Assertion failed: [File:/home/***/.local/ ...

Resizing the Editor window causes flicker effect

Tools - Sep 21, 2018

Resizing the Editor from 3 out of the 4 corners causes a flicker effect on the Editor window. The bottom right corner works normally but the other corners causes flickering. Link to video example:  ...

Nativize BP Package fails when using Sub Anim Instance with exposed variables

OLD - Anim - Jun 26, 2017

When using exposed variables on Sub Anim Instance nodes, packaging with nativize blueprints fails Tested on: 4.15 - 3450819 4.16 - 3466753 4.17 - 3502710 ...

Copying a socket to another skeleton adds a "_0" suffix

OLD - Anim - Jun 28, 2017

Copying a socket to another skeleton adds a "_0" suffix Occurs on? 4.15 - 3450819 - YES 4.16 - 3466753 - YES 4.17 - CL#3512142 - YES ...