[CrashReport] UE4Editor_SlateCore!FHittestGrid::FindFocusableWidget<<lambda_3a8b364273a2882da220e6e492096c17>,<lambda_d0075a811a928600995d1b2de6795365>,<lambda_105424556dbaeebf7f5bf9bed3e2f737> >() [hittestgrid.cpp:397]

UE - Editor - UI Systems - Jun 18, 2018

No user comments in crash group 394 for (StrideCellPoint[StrideAxis] = StrideAxisMin; StrideCellPoint[StrideAxis] <= StrideAxisMax; ++StrideCellPoint[StrideAxis]) 395 { 396 ** ...

Child actor components fail to attach in cooked builds when mobility is set to movable and end up at the origin

UE - Gameplay - Oct 21, 2025

Context: A Child Actor Component allows an actor in Unreal Engine to contain another actor as its child (component). Problem: The problem is inconsistent handling of child actor component mobility ...

Controller Mapping/Unmapping on some platforms is not ideal for local multiplayer

UE - Gameplay - Input - Nov 19, 2025

[Link Removed] The workaround is as I posted in the UDN, to override the viewport client or to make a custom slate input mapping to change this behavior. But, there is a bug with that unmapping/l ...

Sequencer fails to package during Build command for ASTC

UE - Platform - Mobile - Jan 15, 2017

When attempting to test for ESDSR on Android, the Sequencer project fails to package towards the end of the Build Command. Runtime/OpenGLDrv/Public\OpenGLESDeferred.h(267,5) : warning: 'OPENGL_ES2 ...

[CrashReport] UE4Editor_Core!FWindowsWindow::Initialize() [windowswindow.cpp:199]

Tools - Mar 1, 2017

Error message: Assertion failed: 0 [Link Removed] [Line: 199] Window Creation Failed (1158) Source Context: 184 VirtualHeight = ClientHeight; 185 186 // We call reshape w ...

Unable to edit double variable in property matrix

UE - Editor - Workflow Systems - Oct 2, 2023

Since UE5.0, cannot edit double variables in property matrix. In UE4.27, it worked correctly and could be edited from the property matrix. This is because double variables are not supported in SProp ...

Data Asset Deserialization crash after upgrading 4.19.2 to 421.1

UE - Foundation - Core - Feb 7, 2019

The User has provided an extensive log of their code base setup, and the process leading up to when the Assert occurs. "Our game mode & player state FSM are setup in a data driven manor using UDa ...

OSVR Attempts to initilize when no runtime installed and during packaging for GearVR

UE - Platform - XR - Apr 28, 2016

Full log attached below: During packaging many log show that it is trying to initialize and i do not have the runtime installed. Snippets from a portion of the log[2016.04.28-15.05.46:033][ 0]OSV ...

[CrashReport] UE4Editor_D3D11RHI!FD3D11DynamicRHI::RHICreateUniformBuffer() [d3d11uniformbuffer.cpp:218]

UE - Graphics Features - Jun 12, 2018

No user comments in crash group 208 check(Layout.ResourceOffsets.Num() == NumResources); 209 210 for (int32 i = 0; i < NumResources; ++i) 211 { 212 ...

Launching the editor with -d3ddebug and enabling LOD Coloration mode gives D3D11 DEVICE_PSSETSHADERRESOURCES_HAZARD warning

UE - Graphics Features - Nov 3, 2015

Launching the editor with the "-d3ddebug" command line option and then enabling the "LOD Coloration" view mode (under "Lit") results in the following D3D warning: D3D11 WARNING: ID3D11DeviceContext ...