Adding a code class derived from AnimInstance to a project created using the code Vehicle template will cause the Visual Studio build to fail.

UE - Gameplay - Dec 1, 2014

Adding a new code class derived from AnimInstance will cause the Visual Studio build to fail in a project based on the code Vehicle template. The build errors indicate that there are problems in the ...

[CrashReport] Crash on Mac - UE4Editor-Slate.dylib!FTextLayout::GetAsTextAndOffsets()

UE - Platform - Apple - Jul 17, 2017

This is a common crash occurring for Mac users on the 4.17 Preview, and a few cases in 4.16. I have been unable to find any matching reports of this crash on Windows. There is a slight variation in ...

BP - Exclusive nativization will fail at cook time if an Actor BP class enabled for nativization includes a Component BP that's not enabled for nativization in its component list.

UE - Gameplay - Blueprint - Apr 26, 2017

This happens because the Blueprinted component is not also enabled for nativization, but the nativized Actor BP tries to use it as a native class type. Current workaround: Ensure that the Blueprint ...

Adding specific map to project crashes editor

UE - Gameplay - Dec 23, 2015

Adding map from user's project, CityofEther.umap, crashes editor upon launch or attempting to open the map. Crashreporter: [Link Removed] ...

GAS: Initial OnRep_SpawnedAttributes from DefaultStartingData clears attribute values for already replicated ActiveGameplayEffects

UE - Gameplay - Gameplay Ability System - Oct 23, 2024

Context The property 'DefaultStartingData' in AbilitySystemComponent can be configured from blueprint to spawn default attribute sets. This happens OnRegister. For runtime spawned actors like pawns ...

Crash occurs after pausing and unpausing cinematic after restart level

UE - Platform - Apple - Oct 10, 2016

This was tested on Windows the crash does not occur. This crash also occurs on Matinee cinematic as well, but only when you ~ quit the standalone game. ...

Compsure crashes when reordering transform passes

UE - Graphics Features - Aug 10, 2020

Re-ording the Transformpass array results in a crash of the engine. Link to repro video: [Link Removed] ...

Editor can crash while performing a Hot Reload after a custom UClass class is added to the project

UE - Foundation - Cpp Tools - Hot Reload - Mar 14, 2019

Performing a Hot Reload after creating a custom UClass class can result in a crash. This was reported on Linux, but reproduced on Windows. Additional testing will be done on Linux to confirm the is ...

(GAS) Block tags are ignored in version 5.5.2 if two abilities share the same parent tags structure.

UE - Gameplay - Gameplay Ability System - Feb 5, 2025

Block tags are not working correctly in version 5.5.2, it was working in 5.5.1. This is caused by a change done in version 5.5.2. The exact CL is: CL 35930696 ...

GameCenter does not login on Match3 startup on iOS

UE - Platform - Mobile - Aug 23, 2016

When launching on or opening a packaged UnrealMatch3 project GameCenter does not login for the paired account. This causes Leaderboards and Achievements to appear blank. Tested on iPhone6s_6240 OS: ...