Unreal Engine Issues
Unreal Engine Issues
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) ...
Nvidia Graphics Drivers cause editor menus to flicker and disappear after using the editor for an extended period of time
UE - Graphics Features - Apr 16, 2021This issue seems to be occurring on a variety of Nvidia cards. So far, I haven't seen any indication that it is affecting AMD graphics cards. The majority of the reports have indicating that the pro ...
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 ...
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 ...
Upgrading to from 4.6 to 4.7 can cause assets to not be fully loaded in
UE - Gameplay - Blueprint - Mar 8, 2015A user has upgraded their project from 4.6.1 to 4.7.2 and now one of their assets is partially loaded. After a bit of digging I found an error in the event graph of the ShadowHerosHUD. The nodes are ...
Accept Source on conflicted asset creates duplicate, renamed, blueprint asset and makes original unopenable
UE - Gameplay - Blueprint Editor - Aug 6, 2016Accepting source for a conflicted blueprint asset in the merge tool currently creates a new asset *_3 and makes the original name asset unopenable. Found on: //UE4/Main CL-3079307 //UE4/Release-4. ...
Default values resetting for level instances of custom component pointers
UE - Gameplay - Components - Feb 3, 2017When a code component contains a pointer to an actor, adding the component to a blueprint and setting the pointer to point to an instance of the same blueprint will cause the pointer to reset to "No ...