Naming a Blueprint function/graph with non-ASCII characters can cause a build failure for certain cooked targets when Blueprint nativization is turned on.

UE - Gameplay - Blueprint - Nov 2, 2017

This is due to the [Link Removed] encoded UFunction object name passing through UHT into the boilerplate code (*.gen.cpp) that gets generated from the nativized Blueprint's C++ header file. The iss ...

Cannot pass a Dictionary through a Replicated Function

UE - Networking - Aug 23, 2018

When passing dictionary (map) variables through replicated (to server) functions, the value will not print out on the client. In 4.19.2 (CL-4033788) this caused a crash but in 4.20.2 (CL-4302132) an ...

Attempting to override timeline function in child blueprint crashes editor

UE - Gameplay - Blueprint - Sep 24, 2015

Attempting to override a timeline within a child blueprint causes the editor to crash. Frequency: 4/4 Crashreporter: [Link Removed] ...

Texture Streaming not Functioning as Expected

UE - Graphics Features - Oct 5, 2015

There have been reports of users experiencing odd behavior with Texture Streaming in their projects. Comment from user reporting issue: "Texture memory is being eaten up... streaming not functionin ...

Crash running Cloth functional tests

UE - Simulation - Physics - Character - Apr 20, 2017

Crash occurs when running the Cloth functional test map. ...

iOS Multiplayer Join Session does not function.

UE - Platform - Mobile - Aug 18, 2016

iOS Game Center multiplayer create session does not function or crashes app. ...

Simple Move in sublevels does not properly function

UE - AI - Sep 14, 2015

Using simple move to location in sublevels causes the blueprint not to respond or function correctly. ...

Renaming the function for a bound event will cause the event to stop working

UE - Editor - UI Systems - Jun 26, 2015

A user found that when renaming a binding for a mouse down event for a border widget that the event would no longer fire off. They only worked as long as the default name was used. ...

GeometrycacheActor light channel issue

UE - Graphics Features - Apr 9, 2020

Lighting Only Affects Tilemaps From One Direction

UE - Graphics Features - Oct 9, 2018

Lighting only affects tilemaps from one direction.  Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.22 CL# 4435744 ...