Unreal Engine Issues
Unreal Engine Issues
Level Bounds Incorrectly Calculated If Particle System Does Not Have "Use Fixed Relative Bounding Box" Enabled
UE - Niagara - Jul 26, 2018If "Use Relative Fixed Bounding Box" is disabled, level bounds will be incorrectly calculated. This seems to be similar to [Link Removed]. Found in 4.19 CL# 4033788, 4.20 CL# 4212847, 4.21 CL# 4233 ...
Crash converting code project 4.7 to 4.8 ; Array index out of Bounds
UE - Gameplay - Blueprint - Jun 18, 2015Some users are experiencing a crash when converting their project from 4.7 to 4.8. From user reports it appears to be affecting those who have added code to their projects and created blueprints bas ...
Run command fails launching onto iOS from Mac with Error_DeviceOSNewerThanSDK on Xcode 8.3.3
UE - Platform - Mobile - Jun 9, 2017Xcode version is 8.3.3 and device OS version is 10.3.2Error Launch failed! Failed to launch on device. Make sure your install of Xcode matches or is newer than the OS on your device. Tested on i ...
Backout attempted fix for - AutoSize triggers ensure on shortened Skel Anim Section moved past anim length
zComponent - Archive - May 29, 2026In Sequencer, calling "Edit > Auto Size" on a UMovieSceneSkeletalAnimationSection triggers the LowerBound > UpperBound ensure in UMovieSceneSection::SetRange (MovieSceneSection.h:333) when the secti ...
Bug in StringTemplate.cpp related to modulo operator in MaterialTemplate.ush (code fix provided)
UE - Rendering - Architecture - Materials - Jun 25, 2024Shader Template files like MaterialTemplate.ush do not submit previous chunks when encountering a `%` character, unless that `%` character is `%s` or `% {...} `. Because the error is happening ...
Fix PrimitiveComponent overlap indirection
UE - Simulation - Physics - Sep 27, 2016When doing overlap tests in PrimitiveComponent, UWorld->ComponentOverlapMulti is used. The callstack for that ends up looking like this (callstack is inverted, highest level on top): UWorld::Compo ...
Missing Jump Nodes for Character Blueprint in 4.8 verstion of Animatioin Starter Pack
Docs - Samples - Jul 10, 2015While other inputs are set up for the Character BluePrint, the inputs for Jump are missing so that, even if the user enters Action Mappings for jump under project settings, the character may play t ...
iOS - Launch On - Application Crashes on device, on iOS 8 devices
UE - Platform - Mobile - Jul 20, 2016Blueprint Template Launch On from Mac crashes on device. ...
Localization warnings when opening a new project in 4.8.1
Tools - Jul 2, 2015There are a couple of warnings that show up in the output log that are dealing with localization when opening up a new project. ...