Unreal Engine Issues
Unreal Engine Issues
External textures only work in pixel shaders
UE - Platform - Mobile - Nov 21, 2017External textures currently only support pixel shaders, presumably because some platforms, such as Android only have pixel shader support. On other platforms this causes a regression though: For exa ...
Sequence director fires events multiple times if multiple levels are streaming.
UE - Anim - Sequencer - Nov 7, 2018The new event track in level sequences fires the number of times that there are levels streaming. ...
GetOverlappingComponents does not work on Mobile
UE - Simulation - Physics - Jun 13, 2016The GetOverlappingComponents node isn't working correctly on mobile devices. It seems like it may only not be registering components that are spawned at runtime, as it does change the number of over ...
Investigate removing reliable sequence synchronization from UActorChannel::SetChannelActor
UE - Networking - Jul 8, 2019UActorChannel::SetChannelActor contains old code to synchronize the channel sequence numbers for a connection if the channel index is reused. This seems unnecessary now that we intentionally update ...
Daydream "Quit Game" node returns to homescreen of device instead of Daydream VR home
UE - Platform - XR - Feb 14, 2019Google App store rejects UE4 apps with the response: "App switches to a 2-dimensional view unexpectedly When in VR, your app should never display any 2D images. For more information and examples, p ...
Converting BSP to static mesh on Linux causes the editor to crash
UE - Platform - Linux - Mar 11, 2016Converting a BSP to a static mesh will freeze and crash the editor when done on Linux. Windows does not exhibit the same conversion crash. ...
Linux crash upon opening maps in Soul: City content pack
UE - Graphics Features - Jan 29, 2018Opening the maps from the Soul: City asset pack on Linux causes a crash. This seems to be rendering related. It was originally reported as a Vulkan specific issue but we've reproduced it without Vul ...
[AI] Navmesh shows in editor but does not get loaded in PIE
UE - Runtime - Character - May 13, 2024When using static or dynamic modifiers only navmesh, there are times that the navmesh will build and display correctly in editor, but it does not get properly loaded at runtime (PIE/SIE). The Recast ...
Significant hitch occurs when invoking ApplySettings on a UGameUserSettings object
UE - Rendering - Features - Jun 18, 2025Calling the ApplySettings method on a UGameUserSettings object results in a noticeable hitch, with severity proportional to the number of primitive components present in the scene. This hitch stems ...
UGeometryCollectionComponent::EventDispatcher gets registered for events twice what can result in duplicate collision events being fired
UE - Runtime - Deformable - Sep 18, 2024UGeometryCollectionComponent::EventDispatcher gets registered for events twice, once in UGeometryCollectionComponent::RegisterForEvents() and again in UChaosGameplayEventDispatcher::OnRegister(). Th ...