Migrating a blueprint based on a custom class breaks after migration

UE - Gameplay - Blueprint - Sep 21, 2015

When a blueprint that is based on a custom class is migrated from one project to another the references to the original class are held. This means that the blueprint is unusable in the new project, ...

HoloLens auto-enabling as a supported platform in 5.1

UE - Platform - XR - Mar 30, 2023

https://udn.unrealengine.com/s/case/5004z00001n9MUWAA2/hololens-cannot-be-permanently-disabled-as-a-target-platform?fromCase=1 They disable hololens as a supported target platform, but it is enab ...

Custom Stencil renders incorrectly with instance stereo enabled

UE - Platform - XR - Apr 8, 2019

When using instance stereo with custom stencils, they do not render as expected. It appears to render the stencil in one eye at a time (as the user's head is turned). Regression: Yes This was work ...

Crash when using a Self reference with a Custom Event variable

UE - Gameplay - Blueprint - Jan 19, 2017

Crash when using a Self reference with a Custom Event variable that is using Pass By Reference. The crash only seems to occur if the setup was created in the Player Controller class. This was origi ...

Error when exposing a tMap/tSet on spawn and connecting it to a custom event

UE - Gameplay - Blueprint - Jul 12, 2017

When using a variable that has been setup to be a container of the type "Set" or "Map" and error will be thrown when connecting an exposed input pin to a custom event. ...

Linux Multi-Monitor Support Issues on GNOME Shell

UE - Platform - Linux - Dec 6, 2017

Users with GNOME Shell installed have reported having issues with multi-monitor support when the monitors are not equally sized or the same aspect ratio. If the application is moved from a smaller ...

Hot Reload crash on PIE with custom AIController and Perception Component

UE - AI - Sep 29, 2015

If a pawn in the level is using a custom AI Controller that sets the AIPerceptionComponent in code, the editor will crash on PIE after a hot reload. CrashReporter: [Link Removed] ...

Users custom AI-heavy project crashes if anything is Built

UE - Gameplay - Feb 2, 2015

Users custom AI project crashes if anything is Built. (All, Lighting, Geometry, etc.) The project can be played but receives a message during play that the Navmesh needs to be rebuilt. ...

Unable to reparent component blueprint to custom class based on ActorComponent

UE - Gameplay - Blueprint - Jan 6, 2016

After creating a component blueprint (tested with SceneComponent / ActorComponent) the blueprint cannot be reparented to a custom classed inherited from ActorComponent. This seems inconsistent sinc ...

Custom Primitive Data on BP instance not taking affect while in editor

UE - Rendering Architecture - Apr 5, 2023

Original Repo is from 4.27, however, it still happens in 5.2. This is happening because the Instance Data system does not update the field UPrimitiveComponent::CustomPrimitiveDataInternal from the d ...