Unreal Engine Issues
Unreal Engine Issues
Set world or relative rotation on a child component sets the wrong rotation
UE - Gameplay - Blueprint - Aug 21, 2018Unexpected results from setting relative rotation on child of child in BP. Also confirmed in Main CL 4302610 "I have found that changing this code from RelativeRotationCache . RotatorToQuat (NewRe ...
Directly opening a modified map asset of a streaming sublevel does not always force it to be reloaded (inconsistent with other map open behaviors)
UE - World Creation - Worldbuilding Tools - Feb 10, 2026When the level currently being edited has unsaved changes and the user opens a new one, the Editor asks if the changes should be saved. If the user answers negatively, the level asset is reverted to ...
Editor crash when shader debugging enabled including r.shaders.optimize=0
UE - Rendering - Architecture - Shaders - Jun 23, 2024The editor crashes when activating cvar options for shader compilation and debugging. ...
D3D12 Does Not Correctly Validate Static Uniform Buffers Correctly
UE - Rendering - Architecture - RHI - Feb 12, 2025When adding a Uniform Buffer Struct that has one 4x4 matrix to a mesh pass, validation will fail, due to a Uniform Buffer Struct mismatch. This can be reproduced by adding a mesh pass in project-si ...
Bug: Level Sequence OriginOverrideLocation not propagating to newly added nested ShotTracks
zComponent - Archive - May 14, 2025Within a Level Sequence, it's possible to override the transform (OriginOverrideLocation) of a ShotTrack. This generally works as expected — all nested ShotTracks should inherit and apply the transf ...
UEnum::NumEnums appears to be returning one more than the actual number of elements in an enum.
UE - Foundation - Core - Jan 6, 2015A user reported that UEnum::NumEnums appears to be returning one more than the actual number of elements in the enum. ...
Android DLC profile in Project Launcher fails if there is a space in the path for the destination directory
UE - Platform - Mobile - Aug 22, 2018Creating and running an Android DLC profile in the Project Launcher currently fails if there is a space in the path to the destination directory where the packaged DLC will go. If there is no space ...
Implied Decal Blend Modes don't account for static ignore-switch parameters in an expected way
UE - Rendering - Architecture - Sep 28, 2021The desired behavior from a user perspective here is that they'd be able to use Static Switches in a decal master material to toggle different features and behaviors. In the above setup, if I set th ...
AppleARKit forces view projection matrix according to device viewport
UE - Platform - XR - Nov 5, 2024[Link Removed] ...
Chaos Modular Vehicles Examples desynchronizes easily
UE - Runtime - Character - Feb 27, 2025Chaos Modular Vehicles Examples does not replicate properly and it's easy to reach a state of desynchronization where the state stops being replicated and position/rotation of cars mismatch. As an ...