Unreal Engine Issues
Unreal Engine Issues
UnLit materials are not masked out on mobile deferred lighting pass with depth prepass enabled
UE - Platform - Mobile - Feb 25, 2022Creating a Packed Level Instance from an asset with a negative Scale Transform inverts normals
UE - World Creation - Worldbuilding Tools - Level Instances - May 11, 2022Creating a Packed Level Instance from an asset with a negative Scale Transform inverts normals. Using Create Level Instance will not cause this to occur. ...
[Audio Import] - Cue Points are stripped on import on 24-bit wave files
UE - Audio - Jul 12, 2022When importing wav files with a higher bit depth than 16, any cue points on the file are stripped. ...
Blueprint Add Custom Event unable to resolve delegate signature inside a split struct
UE - Gameplay - Blueprint - Apr 19, 2024This issue occurs when a static function is created and has a struct parameter that has a delegate exposed to blueprint. When using the helper function in blueprint after having used "Split Struct ...
Missing display units initialization from project settings
UE - Editor - Workflow Systems - Jun 11, 2024From customer: Hi there, I stumbled upon a bug where the display units as set in the Project Settings under the Editor Appearance category for properties were not getting displayed properly and was ...
Material Emissive Color not working with SkyAtmosphereIlluminance Material Expression
UE - Graphics Features - Jan 9, 2025A licensee has reported that they are unable to use an emissive material utilizing the SkyAtmosphereLightIlluminance material expression together with Nanite and Lumen. The linked UDN has some more ...
Performance hitch from RemoveGeometryCache flushing the render thread
UE - Editor - Content Pipeline - Alembic - Jun 12, 2025FGeometryCacheStreamingManager::RemoveGeometryCache calls FlushRenderingCommands which shows up as a hitch when profiling. [Link Removed] Ideally the flush added in CL#23782411 to fix a rare deadl ...
Distance Fields no longer work with instances when PIE/Simulate
UE - Graphics Features - Apr 20, 2015When using distance fields with instance meshes from the foliage tool everything works correctly, however, when simulating or PIE the distance fields will be removed. This working correctly in 4.7.5 ...
Editor movement control regression
Tools - Jul 8, 2015Using Ctrl+Drag in 4.8 will not affect the location of selected actor if the viewport camera is facing away from selected actor. In 4.7.6 the actor would travel along the X axis even if the camera ...
Game sounds only play during first PIE editor session for Linux project
UE - Platform - Linux - May 11, 2015Games sounds will play as appropriate during first PIE session but subsequent PIE sessions have no sound until editor is closed / reopened. ...