Crash occurs on Mac when using the Command-S keyboard shortcut to save a Blueprint if the Mac input language is set to Japanese Romaji

UE - Platform - Apple - Aug 10, 2017

The Editor will crash when using the keyboard Command-S shortcut to save a Blueprint after adding a node if the Mac is set to use Japanese Romaji input. The crash actually seems to occur as soon as ...

Property "GameFeatureData.PrimaryAssetTypesToScan.Directories" should be tagged with "ForceShowPluginContent"

UE - Foundation - Oct 11, 2025

When using a Game Feature Plugin, one of the settings available in the "GameFeatureData" DataAsset (class UGameFeatureData) is "PrimaryAssetTypesToScan", which is an array of FPrimaryAssetTypeInfo s ...

Packaging Fails When Media Player->Open Source is Used in C++

Media Framework - Sep 13, 2016

When attempting to use a media player asset in code, packaging will fail with the error message shown below. Could not find a native player for [...]4.13/Content/Movies/Tutorial.wmv This occurs ev ...

Regression: Cannot import Landscape Layer Weightmap along with Heightmap because of broken resolution check for tiled images.

UE - Graphics Tools - Terrain - Jan 30, 2025

When working in the "Landscape" editor mode, in both the "New" and "Import" tools, it is possible to import a single heightmap, as well as a weightmap for each layer. Each of these maps can come fro ...

Overlap Events Stop Firing When Actor is Moved to a Different Level

UE - Gameplay - Feb 1, 2017

Overlap events, such as OnComponentBeginOverlap seem to stop working when the actor is moved to a sub level. This does not occur if the object is deleted and then replaced in the level. ...

4.14 fails to launch on macOS High Sierra

UE - Platform - Apple - Jan 15, 2018

The engine will crash in `FMacPlatformSplash::Show()` when trying to launch on macOS High Sierra. ...

Memory leak when using Blueprint Debugger while inspecting a return value

UE - Gameplay - Blueprint - Mar 11, 2022

Potential memory leak when using Blueprint Debugger to inspect a return value multiple times while playing. User also reported this would cause a crash, but I didn't try to max out ram usage to trig ...

Local binary build fails for iOS platform.

UE - Foundation - Core - Oct 5, 2017

Attempting to create a local binary build of the Engine for the iOS platform using BuildGraph is currently failing. While trying to build UHT for Mac using a remote build, the build fails because it ...

Lighting Build Fails With High Density Foliage

UE - World Creation - Worldbuilding Tools - Foliage - Jan 16, 2018

Trying to build lighting on a map with high density foliage will fail lighting build or cause the editor to crash. This occurs in 4.15, 4.16, 4.17, and 4.18. There have been multiple reports of this ...

VS2015 Update 3 prevents the editor from compiling code

UE - Foundation - Cpp Tools - UnrealBuildTool - Jun 28, 2016

Updating Visual Studio 2015 to Update 3 prevents code projects from compiling / creating new code projects ...