[CrashReport] UE4Editor_Engine!FStaticMeshVertexBuffer::BindLightMapVertexBuffer() [staticmeshvertexbuffer.cpp:495]

UE - Graphics Features - Mar 20, 2018

User comment from crash group:reimporting fbx 491 void FStaticMeshVertexBuffer::BindLightMapVertexBuffer(const FVertexFactory* VertexFactory, FStaticMeshDataType& Data, int LightMapCoordinate ...

Windows registers touch events twice - Once as mouse click

UE - Editor - UI Systems - Slate - Nov 28, 2017

When tapping on a button with a touch monitor, it is registered as two inputs. There was an issue on win7 where touch inputs were counted as touches and clicks. This seems to be the same issue on wi ...

Template_Default.umap and Template_Default_BuiltData.uasset will be changed each time after cook.

UE - Foundation - Core - Cooker - May 10, 2018

Each time after cook the Template_Default.umap or Template_Default_BuiltData.uasset are changed. But if I move Template_Default.umap to the project content folder, they will be the same as the las ...

All folders in the World outliner open up when Playing in editor with multiple players

Tools - May 24, 2018

When playing in the editor with multiple players, the folders in the world outliner open up. ...

Blueprints with accent characters fail to open when converted from 4.19 to 4.20

Tools - Oct 2, 2018

Any Blueprint with accents in the name, coming from 4.19 won't open in 4.20. Double clicking the asset, trying to right click asset, results in no actions. When loading the project this message app ...

Python cannot spawn object when running in Ueditor-CMD

UE - Editor - Workflow Systems - Dec 7, 2018

It is probably link to the fact the function try to access so GUI object that are not accessible in CMD EditorLevelLibrary.spawn_actor_from_object should work in commandlet ...

Beam Emitter exhibiting lagging behavior when attached to Camera in BP

UE - Gameplay - Sep 26, 2014

Beam Emitter attached to a camera in a blueprint is showing lagging behavior at source and target locations ADDITIONAL NOTES: Have tried to eliminate the lagging through locking source and target w ...

FP_FirstPerson and FP_FirstPersonBP missing when adding feature packs

Docs - Samples - Dec 16, 2019

When adding the first person template (bp or code) as a feature pack, an error occurs stating "Unable to read file" and a warning "failed to import".  ...

Map Get Node Pins In Niagara Module Scripts Can't Search For Standard Data Types

UE - Niagara - Mar 16, 2020

This wasn't like this in 4.24 (see attached images). If you create a variable Engine.Owner.Position the search will find it however. Found in 4.25 Preview 2. Reproduced in 4.26 Main. ...

Launching a specific UDN Project with Vulkan Support enabled crashes launching on Quest

UE - Platform - XR - Jul 30, 2020

When attempting to run the attached Project submitted from UDN, it will crash on launch. If Vulkan support is disabled, the Project will run as expected on Quest. This issue DOES NOT appear to repro ...