Unreal Engine Issues
Unreal Engine Issues
Particle Systems Feed Broken Values to Dynamic Parameters in Materials with Instanced Stereo Enabled
UE - Niagara - Jul 11, 2019Particle Systems Feed Boroken Values to Dynamic Parameters in Materials with Instanced Stereo Enabled Working as expected in 4.21 CL# 4753647 Found in 4.22 CL# 7053642, 4.23 Preview 1 CL# 7236301, ...
Twinmotion processes may not fully close on Mac after exiting program
TM - Core - Aug 14, 2024Reported to support in SF [Link Removed] and reported on reddit at [Link Removed]. For Twinmotion 2024.1 on Mac, some users are reporting that Twinmotion processes are still running after closing t ...
[Iris] DestroyObjectsPendingDestroy not called on server with no clients
UE - Networking - Iris - Mar 25, 2025In UNetDriver::TickFlush, UReplicationSystem::PreSendUpdate is not called on the server when it does not have any client connections. PreSendUpdate is where DestroyObjectsPendingDestroy is called fr ...
UCanvasRenderTarget2D crashes on some video cards if the BGRA format is selected
UE - Graphics Features - Apr 26, 2021The reason for the crash is that the underlying resource uses DXGI_FORMAT_B8G8R8A8_TYPELESS, and UAV support for that format is optional. UCanvasRenderTarget2D sets bCanCreateUAV to true always, wit ...
TitleProperty does not work with VisibleAnywhere properties
UE - Editor - Workflow Systems - Aug 15, 2023In: [Editor\PropertyEditor\Private\PropertyEditorHelpers.cpp:118] function SPropertyValueWidget::ConstructPropertyEditorWidget checks what type of widget to create. In: [Editor\PropertyEditor\ ...
OSX editor fails to run on "older" hardware
at first, a "OpenGL Not Supported" message box appears and then the Editor instantly crashes after the "OK" button has been pressed. I tried again, but this time, passing in the "-opengl" flag. it ...
Foliage disappears after 1.5k if occlusion culling project setting is disabled
UE - World Creation - Worldbuilding Tools - Foliage - Aug 30, 2017When unchecking the Occlusion culling option in the project settings, if you place over 1.5k foliage meshes in the world, they stop rendering, the meshes are still present in the level and can be se ...
Occasional crash when attempting to in-app purchase on Android device
UE - Online - Apr 21, 2021App is frequently terminated with a NullPointerException when attempt to request in-app purchase. It is assumed that product information cannot be retrieved if there is no Google account logged in t ...
COM Media Type error in video writer on 8K videos
TM - Rendering - Dec 12, 2024360 videos set to 8K resolution will fail to render in Twinmotion 2024.1.2 and newer Render attempts will end abruptly shortly after being initiated with the following error message ion the logs L ...
Unable to Import Alembic Files in UE4
UE - Editor - Content Pipeline - Import and Export - Feb 25, 2020We have written a plugin for UE4 that allows Unreal users to import and set up Megascans assets into Unreal Engine. Recently we added Alembic files to our assets and also updated all our plugins to ...