Failed to find stub IPA when uproject name is changed from default

UE - Platform - Mobile - Nov 1, 2018

Failed to find stub IPA when packaging for iOS. This also happens with File > Package > iOS.IPP ERROR: Failed to find stub IPA 'D:\FaceARSample421\Binaries\IOS\FaceARSample421.stub' Regression: Yes ...

Crash when generating mip maps for texture

UE - Graphics Features - Dec 23, 2019

Generating mip maps results in crash and seems to duplicated 1x1 mip level. NOTE: The bug was originally reported in 4.23.1, however, for some reason I was able to open the texture in 4.23.1 afte ...

Chaos Cloth Self Collisions Spatial is slow when Tris are much smaller than thickness

UE - Simulation - Physics - Character - Apr 21, 2023

This came via a UDN. Very small triangles can generate very small lods, which make query time really slow if your self collision thickness is significantly larger. You will do X^3 checks per query ...

OnObjectPropertyChanged Firing Excessively when FText is Bulk Edited

UE - Editor - Jun 28, 2023

If multiple game objects are selected at once and their text field is edited, instead of getting N events, it produces N-squared events. It looks like FPropertyHandleBase::SetPerObjectValue is call ...

Dynamic point lights generate shader compile errors on HTML5

UE - Platform - Mobile - Aug 20, 2015

The new ES2 movable point lights look promising. Unfortunately, there seems to be an issue with them in HTML5 builds. They work great in the ES2 preview mode in the editor, but when running in an ac ...

Run Command fails when launching code project onto Mac from the editor

UE - Platform - Apple - Apr 18, 2017

This only affect Launching on code projects. Packaging code projects works fine.LogPlayLevel: Program.Main: ERROR: AutomationTool terminated with exception: AutomationTool.AutomationException: Unabl ...

[CrashReport] UE4Editor_Landscape!ALandscapeProxy::GetLandscapeInfo() [landscape.cpp:785]

UE - LD & Modeling - Terrain - Landscape - Jul 13, 2017

This is a common crash affecting users in the 4.16 release. Users have not provided any descriptions. Source Context 775 { 776 ULandscapeInfo* LandscapeInfo = nullptr; 777 ...

Socket Snapping in level editor no longer works

Tools - May 14, 2018

The Socket Snapping level editor action no longer works in 4.19/4.20, it worked in 4.18 but regressed. It still attaches but it's set to maintain it's world position, so it doesn't actually snap. T ...

ABSLOG command fails to parse properly if path includes a ) and does not contain a space

UE - Foundation - Core - Jan 22, 2019

A licensee has reported an issue where using ABSLOG results in some parsing issues with certain characters in path names. In this example, the issue is with ). If the Parse function ends up parsing ...

UMG Slider displays long or wrong percentages when Step Size is set to 0.1

UE - Editor - UI Systems - Apr 24, 2020

When the Step Size is set to 0.1 for a Slider and Slider value is multiplied by 100, it will display weird numbers when moving the slider back from 100%. Changing the Step Size to 1 and changing th ...