Find Session and Join Session to join a session over LAN on iOS is inconsistent and requires being run multiple times to work

UE - Networking - Aug 8, 2018

Attempting to use Find Session / Join Session to join a LAN session on iOS results in inconsistent results, requiring the client to press the join button multiple times to join properly. Currently ...

Hot reload fails after adding a Static Mesh Component to a new Actor code class in a project that was originally Blueprint-only

UE - Foundation - Cpp Tools - Hot Reload - Oct 25, 2018

Starting a hot reload by clicking the Compile button in the Editor fails after adding a Static Mesh Component to an Actor code class. This only occurs in the binary version of the Engine, and only i ...

Editor crash on level load with multiple actors with the name "(none)"

Tools - Jun 14, 2017

If three or more actors are saved to a level with the same name in the Content Browser of "none", attempting to load the level (open or right click on umap asset in content browser) causes the edito ...

Cloth paint update issues

UE - Simulation - Physics - Jan 7, 2020

Activating and Deactivating Cloth Paint marks the skeletal mesh as dirty, even if no values were painted and there is no transaction in the Undo History. Painting Max Distance values from non-zero ...

Hot Reload Crash involving variables in USTRUCTs

UE - Foundation - Cpp Tools - Hot Reload - Sep 1, 2016

This issue was created for this UDN post: https://udn.unrealengine.com/questions/306933/hotreload-crashbad-behavior-when-addingremoving-pa.html This repro is based off his last repro, cutting it do ...

[CrashReport] UE4Editor_Foliage!FMulticastDelegateBase<FWeakObjectPtr>::CompactInvocationList() [multicastdelegatebase.h:159]

UE - World Creation - Worldbuilding Tools - Foliage - Aug 15, 2017

This is a trending crash coming out of the 4.17 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 150 /** 151 * Removes ...

Reflection Captures permanently unload with world streaming

UE - Graphics Features - Jul 19, 2024

When a reflection capture is unloaded due to streaming, it cannot be reloaded when the player returns to that area in the world because FReflectionCaptureData::OnDataUploadedToGPUFinal deletes the C ...

Stationary Point Light is Visible After Building Lighting When Visible is Unchecked

UE - Graphics Features - Aug 30, 2016

While going through a blueprint tutorial which has you build a small structure with a point light in it, then have a script telling the point light to toggle on and off while entering a trigger. I n ...

AddProceduralMeshComponent node throws UnknownTemplateReferenced errors in duplicated Function

UE - Gameplay - Blueprint - Aug 5, 2015

AddProceduralMeshComponent node throws UnknownTemplateReferenced errors in duplicated Function User description: 1) Make a function that has a Add Procedural Mesh Component node. 2) duplicate func ...

The engine crashes when adding a new brush at newly created level by a specific way.

UE - LD & Modeling - Modeling Tools - Mesh Editing - Jun 17, 2019

issuesFBSPOps::csgAddOperation returns null if BuilderBrush has no valid polys.The creating level on content browser never calls "UEditorEngine::InitBuilderBrush(NewWorld);". But "New level" button o ...