Unreal Engine Issues
Unreal Engine Issues
Nanite mesh polygons disappearing when using masked opacity with vertex color in 5.4
UE - Graphics Features - Nanite - Jul 24, 2024In 5.4.3, a nanite enabled mesh with a material that takes its vertex color (R) and uses it as the opacity mask output in a masked blend mode material, causes the mesh to have disappearing polygons ...
Light Complexity view mode crashes if there are hair cards in the scene
UE - Graphics Features - Jul 24, 2024The Editor will crash if Groom Hair Cards are viewed with the Light Complexity View Mode. ...
Changing the Global Time Dilation to a very small value and returning it to a large value (by either using the slomo console command or directly in BP) makes Physics simulating ragdolls fly off into space.
UE - Simulation - Core - Sep 26, 2024Changing the Global Time Dilation to a very small value and returning it to a large value (by either using the slomo console command or directly in BP - slomo sets TimeDilation) makes Physics simula ...
A crash occurs inside the Unreal Editor when we change the Spline Point type of a spline point, and we subsequently select another spline point
UE - Editor - Workflow Systems - Jul 22, 2024In versión 5.4, a crash has been found when using splines inside the LevelViewport. This crash occurs when we change the Spline Point Type of a spline point, and subsequently we select another splin ...
InlineEditConditionToggle Prevents Config Bools from Being Written to Settings .ini File
UE - Editor - Workflow Systems - Apr 1, 2025In a Developer Settings Class, Boolean properties marked with InlineEditConditionToggle do not get written to the associated settings .ini file, preventing configuration settings from being saved pr ...
Collision Drawing in Cooked Builds (Development) doesn't Show Geometry for Nanite Meshes
UE - Graphics Features - Jun 2, 2025Context The showFlag.CollisionVisibility 1 cvar is a viewport visualization mode that highlights which Actors will block visibility. The showFlag.CollisionPawn 1 cvar is a Player Collision viewmode ...
FInstancedStruct does not serialise to JSON when used in a DataTable
UE - Editor - Workflow Systems - Aug 4, 2025The JSON export functionality for DataTable relies on a FieldIterator to gather properties. This iterator is unable to gather the properties from the InstancedStruct. CSV export functionality works ...
Build crash when enabling r.CreateShadersOnLoad=1
UE - Rendering Architecture - Shaders - Nov 10, 2025When "r.CreateShadersOnLoad" is enabled, cooking will crash due to failure to create a shader. This occurs on //UE5/Release-5.5, CL: 41545209 and //UE5/Release-5.6, CL: 45232827 ...
Setting custom world settings blueprint in project settings causes editor to crash on open
UE - Gameplay - Aug 19, 2015If a blueprint based on a custom World Settings class is set in the project settings then the editor crashes on open ...
Projects saved outside of default folder do not show up in Project Browser on Linux
UE - Platform - Linux - Jun 17, 2015If a project is saved outside the default Unreal Projects folder or the project folder is moved from Unreal Projects to another location it does not show up in the list of projects on the Project Br ...