Unreal Engine Issues
Unreal Engine Issues
Launching a specific UDN Project with Vulkan Support enabled crashes launching on Quest
UE - Platform - XR - Jul 30, 2020When 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 ...
Selecting a Struct variable when binding a property in UMG can cause an infinite number of selections
UE - Editor - UI Systems - May 5, 2015If a struct with a Texture 2D variable is chosen when creating a binding for the brush it can create an infinite number of windows. Note: If done enough the editor will crash ...
Add support for referencing non-spatially loaded actors without clustering them together.
UE - Engine Scaling - Streaming - Mar 23, 2023The engine doesn't allow cross-level references as it assumes a referenced object is immediately available which we guarantee by placing any reference clusters into the same cells. This means the be ...
Material Parameter Collections are not working on Android v 5 phones from 4.11
UE - Platform - Mobile - Feb 9, 2016Material Parameter Collections are not successfully passing stored values into Materials when packaged for an Android Phone with an OS version of 5. Both version 4 and 6, correctly use the MPC.Test ...
Seamless travel not supported in single process warning while single process PIE is disabled
UE - Networking - Aug 23, 2016I initially noticed this when I had it set to a single process, but the same error was occurring when I had single process turned off. To double check that Seamless travel was enabled I ran the con ...
Some Twinmotion library assets do not render in Path Tracer in files with a large number of assets
TM - Rendering - Apr 17, 2025Reported in SF [Link Removed] In scenes containing large numbers of certain Twinmotion assets, when activating Path Tracer, some of the assets will not render. The assets will render normally in St ...
UMG Throbber is not showing in project when using 'Set Number of Pieces' node off of Event tick
UE - Editor - UI Systems - Apr 22, 2015If you add a throbber to a UMG Blueprint and use the Graph of the Blueprint to change the 'Set Number of Pieces' and use 'Event Tick' to tick the widget, the throbber widget will not appear on scree ...
[Feature Request] Add support for distance field shadows on Single Layer Water shading model
UE - LD & Modeling - Terrain - Water - Aug 5, 2020Add support for distance field shadows on Single Layer Water shading model (report of it missing in Fortnite here: https://jira.it.epicgames.net/browse/FORT-217878) ...
Particle Cutout Crashes On Mobile Devices That Don't Support Hardware Instancing (Mali-400 GPU)
Particle cutout seems to crash on lower end mobile devices. We believe this is because there is an issue in the particle's SubUV feature. This happens only on devices that don't support hardware ins ...
Deleting a large number of unused variables from blueprints forces desktop to windows 7 basic mode until editor is closed
UE - Gameplay - Blueprint - Mar 30, 2015Deleting a large number of unused variables from a blueprint forces the editor into windows 7 basic mode until the editor is closed. ...