Unreal Engine Issues
Unreal Engine Issues
Possible shader preload deadlock when using Zen streaming
UE - Foundation - Data Pipeline - Jun 12, 2026The deadlock happens when enough shader preload are launch in parallel on a slower IO backend (like zen). When that happens, the preload starts a waiting period that never ends because it cannot be ...
Cannot set GenerateOverlapEvents flag on Landscape
UE - LD & Modeling - Terrain - Landscape - Feb 4, 2015Licensee requests the GenerateOverlapEvents flag be exposed for landscape similar to how it is for staticmeshes. ...
Renderer doesn't handle monitor being disconnected
UE - Graphics Features - Mar 14, 2017Possibly a missing event handler. Note this might be swap-chain related but should also hit other cases if possible, e.g. HDR display detection currently only occurs on device init. ...
Regression in Gaussian and Circle DOF
UE - Graphics Features - Mar 15, 2017Don't believe there's a regression here, but would be good to verify everything is working as intended still after the scene-alpha refactors, no accidental swapped inputs or incorrect sampling. AA d ...
Enable HDR Display Output on Game User Settings Crash
UE - Graphics Features - Jun 14, 2018Crash when attempting to enable HDR via UserSettings This crash will also occur when project is fullscreen. User's Environment: "I have an Nvidia GTX 1080 Ti and have two monitors attached: 1. ...
Visibility animations don't propagate to children
UE - Editor - Content Pipeline - Datasmith - Importer - Oct 16, 2019Cascade To Niagara Converter doesn't respect Initial Location Module
UE - Niagara - Aug 13, 2021Niagara's Initialize Particle Module has the Input.Position Write default Value False which is fine as long as the Cascade To Niagara Converter can realizes whether Cascade has the location Module a ...
Long thin spinning objects take too long to stop spinning
UE - Simulation - Core - Jun 5, 2023See the SpinningObjectStability test map in the Physics Sandbox. [Link Removed] It's not clear if this is a bug or a side effect of some of our solver shortcuts (e.g., omission of the precession te ...
PlayerStart in LevelInstance are not loaded early enough in PIE as Standalone/Listen
UE - World Creation - Worldbuilding Tools - Level Instances - Aug 8, 2023Non-spatially loaded actors in a Level Instance are not embedded properly when entering PIE. This issue does not happen in a cooked build. ...