Unreal Engine Issues
Unreal Engine Issues
Certain Projects crashes on Start AR on iOS
UE - Platform - XR - Jun 11, 2025Repro rate 5/5 Project crashes on pressing "Start AR" in ARDebugCheck, on "Begin Scan" in Handheld AR Template and on "Start AR" in ARImageDetection. Issue also occurs on ARVideoSettings and ARSave ...
GroomComponent: SetVisibility(false) causes per-frame simulation reset instead of stopping it
UE - Runtime - Deformable - Mar 12, 2026UGroomComponent::TickComponent sets bResetSimulation = true every frame when the component is not visible. This causes NiagaraDataInterfaceHairStrands to triggering a full simulation reset every fra ...
Performance will drop in PIE if simulate physics is toggled rapidly on an actor with attached components
UE - Gameplay - Nov 3, 2015Performance will drop in PIE if simulate physics is toggled rapidly on an actor with attached components User Description: Simulating physics for Primitive components causes severe performance dr ...
Opening a project that contains an actor in viewport with a child actor component of type TextRenderActor crashes the editor
UE - Gameplay - Blueprint - Jan 12, 2016If a blueprint with a child actor component of type TextRenderActor is added to a level and the editor is saved, closed, and reopened, the project will crash with the following assert: Assertion ...
Custom Component class does not show up in Add Component list
UE - Gameplay - Blueprint - Mar 5, 2015Creating a code component class and marking the UCLASS() macro with meta=(BlueprintSpawnableComponent) does not allow the component to be used inside blueprints. Workaround: Adding ClassGroup=( [Gr ...
Cannot Rename or Delete Event Dispatchers if they are named "color"
UE - Gameplay - Blueprint - Jul 21, 2015Event Dispatchers cannot be renamed or deleted after being created if the name used is "color". ...
Comment boxes no longer allow pinning/unpinning of comment bubbles
UE - Gameplay - Blueprint - Jun 24, 2015Comment bubbles above comment boxes no longer have an option to pin/unpin comment bubbles. This functionality allowed users to choose whether or not to show the comment bubble, which was useful for ...
Instanced meshes spread further apart as size increases
Tools - Jun 22, 2015As the size increases on instanced static meshes, they spread further apart, causing unwanted breaks in tiling. This increase is proportionate to the increase of size. Note: Despite the collision ...
Android game packaged with obb outside apk does not create SaveGame directory on device
UE - Platform - Mobile - Jun 19, 2015An apk packaged in 4.8 release with 'Package game data inside .apk' unchecked does not create a SaveGame folder in the device's directory and does not create a .sav file. File is saved if the SaveGa ...
Entering 'Games App Id' for Google Play Services without configuring apk packaging first crashes the editor
UE - Platform - Mobile - Jun 12, 2015User reported that he was experiencing a crash when attempting to put in Games App ID in Android section of project settings. Note that this occurs only if the Configure Now button in the APKPackagi ...