Unreal Engine Issues
Unreal Engine Issues
Chaos Cloth: NaNs can be introduced from bad AnimatedPositions/Normals
UE - Simulation - Physics - Character - Aug 17, 2024We've worked out at least a possible way this can occur from using uninitialized AnimatedNormals values when changing LODs. Ensuring all AnimatedNormals are initialized appears to fix the problem. ...
If using High Quality Gaussian DoF on Mobile, the whole screen is always blurred
UE - Platform - Mobile - Jun 17, 2020When High Quality Gaussian DoF on Mobile is enabled, the entire screen is always blurred. I confirmed that it works properly in 4.24. Also, I confirmed that adding the modified CL of [Link Remove ...
Max loop iteration threshold not being reached before infinite loop is triggered
UE - Gameplay - Blueprint - Aug 29, 2019Infinite loop is called when the loop is implemented by only one, one time. When the set up should not flag anything until iteration 1,000,000. [Link Removed] [Link Removed] ...
[Interchange][FBX] Import of custom collision add the collision mesh material slot to the mesh material slot
UE - Editor - Content Pipeline - Import and Export - Jan 20, 2025cf part 2 of that UDN https://udn.unrealengine.com/s/question/0D5QP00000rP4CG0A0/interchange-custom-collision-changes-from-fbx-pipeline?fromCase=1 ...
Landscape components render black
UE - LD & Modeling - Terrain - Landscape - Dec 1, 2016Workaround:Open the Landscape Material and click SaveReload the level Landscape components render black upon first-time compile. Observed in QA-Landscape - several chunks of the Landscape were bla ...
Crash on PIE with varying number of players
UE - Networking - Jan 26, 2015User crashes on PIE when number of players is set to two in the "Play" drop down menu. No crash if number of players are set to 1,3, or 4. Additionally, setting the "Dedicated server" checkbox to ...
Hierarchical Instanced Static Mesh component instances are not duplicated correctly if the parent is duplicated
UE - Graphics Features - Dec 16, 2016Duplicating an actor with a Hierarchical Instanced Static Mesh component that has an instance will duplicate the instance as well, but this instance is not rendered. Please note, this was discovere ...
Navmesh drawing is not visible during Simulate or PIE unless Supported Agents includes the first agent
UE - AI - Navigation - Jan 29, 2020In Simulate or PIE it is not possible to see any Navmesh Volumes past the 1st in a multi-navmesh setup. Any Nav Volumes after the 1st need to have the 1st one enabled for them to be drawn in the Lev ...
Artefacts with Volumetric Clouds
UE - Graphics Features - Nov 2, 2022(Enduring Games) Please see UDN - Case includes project and potential fix from customer. Need to verify that it does not affect other parts of the volumetric composition. bHasValidSamples is the sam ...
USD Stage Import - Spawned actors by USD importer are not saved in level
UE - Editor - Content Pipeline - USD - Jul 20, 2023we ran into an issue with USD Importer plugin for Unreal 5.2. When you import a USDStage with the "actors" import option - which respawns the newly imported actors into the current level. However, ...