This project crashes when one Blueprint is compiled if its child Blueprint is opened in another tab

UE - Gameplay - Blueprint - Mar 18, 2015

This project crashes when one Blueprint is compiled if its child Blueprint is opened in another tab. This only occurs with one Parent/Child combination: the crash occurs when compiling Building whil ...

Make/Break Struct node breaks for native structs after modifying the structure in a hot reload

UE - Foundation - Cpp Tools - Hot Reload - Apr 10, 2017

Changing and compiling a custom struct in C++ will break behavior of Make/Break Struct nodes in blueprints if the blueprint is saved after the compile. Regression: No - blueprint fails to save afte ...

Double Properties break reset to default and inherited value propagation

UE - Gameplay - LWC - Apr 13, 2022

This is an issue with how FPropertyValueImpl::ResetToDefault works: it uses GetDefaultValueAsString to reset the default value. This is problematic because the LexToString function that is eventuall ...

r.Shaders.Optimize=0 crashes when compiling a UI material

UE - Rendering Architecture - Materials - Sep 2, 2024

[2024.08.30-22.12.22:384][ 73]LogWindows: Error: appError called: Assertion failed: CurrentGPUVirtualAddress != 0 [Link Removed] [Line: 659] Disabling shader optimisation can crash the editor when ...

Niagara module inputs don't handle bitfield enums correctly

UE - Niagara - Feb 17, 2025

As one clicks on the enum fields trying to form an input, the log is written with a variation of the following: [2025.02.14-17.42.38:940][521]LogNiagaraEditor: Error: Error getting default value fo ...

Pressed event triggered after calling FlushPressedKeys while holding the button

UE - Gameplay - Input - Oct 2, 2024

This is an issue related to the behavior of the FlushPressedKeys function when called manually while a button is held. Once the function is called in C++, a Pressed event gets triggered even though ...

Changing the name of a variable that references a Blackboard Key inside a Task removes the Key reference inside the Task's node in the Behavior Tree

UE - Gameplay - Blueprint - Oct 5, 2015

Changing the name of a variable that references a Blackboard Key inside a Task removes the Key reference inside the Task's node in the Behavior Tree. Clicking on the Behavior Tree's Task node that r ...

iOS CloudKit Crash

UE - Platform - Mobile - Dec 12, 2019

iOS app crashes when cloudsaves are active When attempting to deploy with 4.25 MAIN @ CL 10668484 it fails with error LogPlayLevel: === BUILD TARGET AJ_ioscloudsave OF PROJECT AJ_ioscloudsave WI ...

UMG Editor Will Compile Incorrect Node And Crash When Called During Runtime

UE - Editor - UI Systems - Dec 26, 2019

The UMG editor will compile as if the blueprints is valid if you make "Get Text" node from a TextBlock variable, delete it and create a EditableText variable with the same name. When running a scene ...

Add Chunks button in asset audit tool does not function because of name compare problem

UE - Editor - Content Pipeline - Content Browser - Aug 5, 2020

The Asset Audit window uses the content browser to display information about both real assets and fake assets like chunk definitions. When you hit the Add Chunks button, it adds several fake assets ...