Using nativized functions on buttons to spawn meshes causes assertion failure

UE - Gameplay - Blueprint - Oct 25, 2016

An assertion failure is thrown when using nativized functions on an Android device. ...

MetalRHI Asserts When Using "Profile GPU" With RHI-Thread/Parallel-Execution

UE - Graphics Features - Sep 14, 2016

When the RHI thread is enabled (with or without parallel-execution) for Metal it isn't currently possible to run "profilegpu" because the GPU timestamp emulation code isn't multi-thread safe and pro ...

Mousing over component list of an actor with InputComponent causes breakpoint in VS during PIE

Tools - Feb 24, 2015

When debugging a project through Visual Studio, if an actor with an Input Component is selected in the World Outliner a breakpoint will trigger in VS when attempting to select/mousing over any compo ...

[CrashReport] Assertion failure in NameTypes.h after CookOnTheFly

UE - Foundation - Core - Apr 25, 2017

This is a top crash occurring for users in the 4.14 and 4.15 releases. Unfortunately no user-descriptions of the issue have been provided, so information is limited. Despite a different callstack, ...

Hitting check when removing HISM instances with Custom Instance Data

UE - Rendering Architecture - Mar 20, 2023

Hitting check(UploadInfo.InstanceCustomDataCount * InstanceCount == UploadInfo.InstanceCustomData.Num()) and also seeing incorrect isntance order after removing instances from HISMs. Additionally ...

Renaming function in parent class that is overridden by child causes an ensure

UE - Gameplay - Blueprint - Aug 5, 2016

Extremely similar repro to [Link Removed], except in this case the parent function has no parameters or return values. Also encountered a one-off crash while exploring repro methods, but was unabl ...

[CrashReport] UE4Editor_Engine!FStaticMeshSceneProxy::SetIndexSource() [staticmeshrender.cpp:679]

UE - Graphics Features - Aug 31, 2018

No user comments in crash group 675 if ( bRequiresAdjacencyInformation ) 676 { 677 check( LODModel.bHasAdjacencyInfo ); 678 ***** OutElement.IndexBuffer = &LODModel ...

Draw to Render Target Android Regression

UE - Graphics Features - May 15, 2019

Regression in Draw Material to Render Target functionality. Enabling Mobile HDR is a workaround. Android tested with Note 4 Unable to verify Main CL 6395234 (Crash on Phone) No repro on iOS mo ...

Montage_SetEndDelegate doesn't set for inactive, but unfinished montages, preventing clearing

OLD - Anim - Jan 7, 2020

If you call Montage_SetEndDelegate after a montage has begun blending out, but before it terminates, the end delegate will not be set because an active montage instance cannot be found. If an AI is ...

Opening map assets from "Open World Demo Collection" causes engine to freeze

Docs - Samples - Mar 9, 2020

Opening map assets from the "Open World Demo Collection" sample results in the engine freezing. No crash occurs, just a lock up of the engine at 75%. There is the possibility that it could take s ...