Unreal Engine Issues
Unreal Engine Issues
VFInitRotation(Cascade) always provides the same rotation
UE - Niagara - Jun 30, 2020This problem caused by incorrect initialization of RandomStream in the GPU particle. //PaticleGpuSimulation.cpp virtual void Init() override { ... check(AllocatedTiles.Num() == TileTimeOfDe ...
High Precision Tangent Basis & Use Full Precision UVs on Skeletal Meshes reset after reimport
UE - Editor - Content Pipeline - Datasmith - Importer - Sep 17, 2020Reimporting a skeletal mesh causes "use high precision tangent basis" & "use full precision UVs" to reset and no longer being applied to the mesh. Reported and tested in version 4.25.3(CL 13942748) ...
Crash after activating the game in debug camera mode
UE - Content - Sample - Apr 20, 2022This behavior occurs in Standalone mode. After activating game, the information board for the game changes its meaning ( numbers of players and time set to 12:00) , but editor immediately freezes fo ...
Standalone Material Function Instance creation results in crash
UE - Rendering Architecture - Materials - Mar 2, 2023Coming from UDN https://udn.unrealengine.com/s/case/5004z00001mDBzzAAG/material-instance-asset-creation-workflows?fromCase=1 Either standalone MFI creation should work just like MaterialInstances, ...
Landscape is missing its material when running a packaged project on Linux arm 64
UE - Graphics Tools - Terrain - Landscape - Apr 22, 2024From licensee: The project contains a small flat terrain with a basic material attached to it - just a single texture sampler connected to the base color output. Also in the project is a skeletal m ...
Favorite Levels menu is hidden if Recent Levels menu was cleared
UE - Editor - Workflow Systems - Aug 23, 2024This issue is caused by the "File > Favorite Levels" menu only showing up if there are 1 or more recent levels. Once that list is cleared, the "Favorite Levels" menu is never added to the "File" men ...
DAE Import - Missing geometry in imported .dae model from Cabinet Vision
TM - Interoperability - Mar 27, 2025Reported in SF [Link Removed] Client created a ,dae file in Cabinet Vision. When imported into TM, geometry will be missing, such as the walls and parts of the cabinets. Tested and occurs in TM 20 ...
LevelSequenceActor transform offset for Sequencer lost on value changed
UE - Anim - Sequencer - Nov 17, 2025Toggling Lock, Pin, Ignore on subsequences or adding new transform key on a character inside a subsequence the Actors lose the LevelSequenceActor transform offset they have at preview and go back to ...
Object Scale Not Working with Instanced Static Mesh
UE - Graphics Features - May 19, 2016Using Object Scale in your material with an Instanced Static Mesh does not change the color of the material if you scale the individual instances of the Instanced Static Mesh component. If you scal ...
Unexpected Collision Response When Nesting Primitive Components with auto-weld enabled and physics disabled on children. The root primitive falls through floor even though it is set to block all.
UE - Simulation - Physics - May 27, 2025Context Auto-weld makes it so if a child is attached to a parent, the two bodies will be joined into a single rigid body. Physic settings like collision profile and body settings are determined by t ...