When used with First Loop Start Frame Offset and Use Animation Blueprint, the character will alternate between the specified animation and the reference pose

UE - Anim - Sequencer - Anim in Engine - Jan 30, 2023

If you use StartFrameOffset set to 1 or higher in conjunction with the Use Animation Blueprint, the character's animation will be rough towards the end of the section. Specifically, it seems that th ...

Paper2D performance regression due to TArray resizing

UE - Graphics Features - Aug 16, 2019

We've noticed after upgrading our heavy Paper2D project to 4.22 that tilemap performance has been massively degraded compared to previous versions. After some digging we found out that it's due to a ...

Crash on map change with non-null values for GPropertyColorationClass and request customizable property coloration color

UE - Editor - Workflow Systems - Aug 7, 2023

This was found by a customer through a UDN, and they offered the fix for it, as well. The basic steps to reproduce the crash are as follows:call GEditor->SetPropertyColorationTarget(...) somewhere i ...

Structs cause packaging to fail when Blueprint Nativization Method is set to "Inclusive"

UE - Gameplay - Blueprint - Apr 26, 2017

Structs cause packaging to fail when Blueprint Nativization Method is set to "Inclusive" Note: Appears to be a regression (worked in 4.15.1) Error example: UATHelper: Packaging (Windows (64-bit)) ...

Force front x imported asset incorrectly display axis for thumbnail and default editor camera

UE - Editor - Content Pipeline - Import and Export - Apr 12, 2021

Thumbnail can be fix by (Quote from UDN) "adjusting OrbitYaw of the ThumbnailInfo for the +X-facing skeletal mesh" Persona Editors can be fix by (Quote from UDN) "setting SkeletalMesh->SetHasCustom ...

Render Target Is Jittery/Blurry When Used With A Scene Capture Component

UE - Graphics Features - Sep 19, 2019

Render Target is Jittery and Blurry When Used with a Scene Capture Component. Found in 4.23 CL# 8386587, 4.234 CL# 8748719 This is a regression. ...

Changing the case of any node with a String input will not be saved

UE - Gameplay - Blueprint - Apr 20, 2016

Changing the case of any node with a String input will not be saved User Description: Changing case of any string input in BP not accepted But the problem is still happened on any string input of ...

Editor will crash on attempt to load a previously-saved Blueprint asset with a serialized default subobject containing a serialized static array of two or more nested subobject instances.

A crash will result if a Blueprint class that's based on a native C++ class containing two or more nested, explicitly-instanced subobjects referenced by a fixed-size object array property are serial ...

Crash when ribbons use delayed spawn particle as source.

UE - Graphics Features - Dec 3, 2015

User has found bug but has a working fix. Verify fix and implement in engine. ...

WASM HTML5 Runs out of Memory in Chrome versions 58+ on Windows

UE - Platform - Mobile - May 5, 2017

We were seeing out-of-memory errors when launching on Chrome version 58 on Windows (both 32-bit and 64-bit). After some investigation, the root cause appears to be a regression introduced in Chrome ...