Unreal Engine Issues
Unreal Engine Issues
Dialog Subtitles randomly Disappear or Display out of Sync
UE - Audio - Sep 8, 2016Dialog Subtitles display out of order or disappear when called to the screen. The users reporting the issue believe this could be due to the priority of the Sound Waves conflicting with one another ...
Assertion failed: Engine crushes when a geometry collection hits a landscape
UE - Simulation - Physics - Jul 27, 2020This is because THeightField::PhiWithNormal has not been implemented yet. ...
Using Depth of Field when "r.PostProcessing.PropagateAlpha" is enabled causes halo effect on higher scalability modes and resolution
UE - Graphics Features - Dec 16, 2024There is a haloing effect when depth of field is used while post processing also has propagate alpha enabled at higher scalability levels. The effect becomes more obvious as the resolution of the vi ...
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 ...
IsEditorOnly Components hidden from Level Viewport
UE - Gameplay - Apr 13, 2018Components of Static Actors seem to be hidden in the Editor Details panel whenever IsEditorOnly is selected. ...
MDL imported from Substance Source with Datasmith causes a crash
UE - Editor - Content Pipeline - Import and Export - Mar 8, 2019MDL downloaded from Substance Source causes a crash. This is reported on UDN by an Enterprise customer: https://udn.unrealengine.com/questions/487598/why-would-ue4-is-always-crashing-when-import ...
Memory leaks at changing lighting scenarios
UE - Rendering Architecture - RHI - Aug 26, 2020The engine does not free the LevelRenderAssetManagers array elements in FRenderAssetStreamingManager when changing lighting scenarios. Following code can avoid this issue. void FRenderAssetStre ...
Deleting transform track can fail to restore state
UE - Anim - Sequencer - Jun 24, 2021Deleting the transform track for an actor that does not have a transform track by default can fail to restore state if there are no keys. ...
PNG file import does not read R values correctly
UE - Texture - Aug 22, 2022Looking at each value of the texture, it seems that the import of the R value is incorrect. PNG:[Link Removed] TGA:[Link Removed] ...
Mesh Particle Collision does not occur when placed in Destructible Meshes
UE - Simulation - Physics - Destruction - Dec 23, 2014Mesh Type Particles with Collision on World Static and Destructibles will not keep collision when placed into the Effects slot of a Destructible Mesh. ...