Upgrading a project from 4.7 to 4.8 will cause the character to load before the level in a packaged game

UE - Gameplay - Jun 22, 2015

After updating a project from 4.7 to 4.8 the character will be loaded first when the project has been packaged out. ...

"Fix root motion initial rotation handling" commit breaks root motion completely

OLD - Anim - Dec 18, 2014

Enabling and processing root motion causes animation to rotate the wrong direction. Roll instead of Yaw. Pitch instead of roll etc. This error does not occur in UE 4.6. ...

Fix the skeletal mesh merge tool material assignment, change the API to avoid confusion

OLD - Anim - Jul 25, 2018

UDN user ask us to change the API for the material to remove confusion with the material ID. Also apparently there is an issue with the skeletal mesh merge tool, the user did not give any repro ste ...

Level Bounds Incorrectly Calculated If Particle System Does Not Have "Use Fixed Relative Bounding Box" Enabled

UE - Niagara - Jul 26, 2018

If "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, 2015

Some 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, 2017

Xcode 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 ...

Bug in StringTemplate.cpp related to modulo operator in MaterialTemplate.ush (code fix provided)

UE - Rendering Architecture - Materials - Jun 25, 2024

Shader 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, 2016

When 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, 2015

While 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 ...