Unreal Engine Issues
Unreal Engine Issues
Lightmass Build Hanging at Specific Percentages
UE - Graphics Features - Sep 4, 2015Lighting will build indefinitely in certain circumstances and can be verified in Swarm Agent that it will continue to process the maps even though the log shows it has completed. This is happening i ...
Lightmass Build Hanging at Specific Percentages
UE - Graphics Features - Sep 11, 2015Lighting will build indefinitely in certain circumstances and can be verified in Swarm Agent that it will continue to process the maps even though the log shows it has completed. This is happening i ...
[bug] OIT doesn't work correctly with alpha composite blend mode
UE - Graphics Features - Substrate - Mar 4, 2025When using OIT, AlphaComposite Materials blend as if they are using the Translucent BlendMode. The order of macro #if … #elif cases cause AlphaComposite Materials to take the same route as Transluce ...
Granular Synth crashes project when played in standalone or packaged with assertion failure
UE - Audio - Jan 5, 2021Assertion failed: SoundWave->GetPrecacheState() == ESoundWavePrecacheState::InProgress The above assertion fail was seen when played in standalone mode. Play-In-Editor mode (PIE) is working as exp ...
Nanite displacement issue when using along non-uniform scaling
UE - Rendering - Graphics Features - Nanite - Feb 26, 2026Nanite Tessellation displacement direction is incorrect for landscapes with non-uniform scales. It seems to use the normal from the unscaled landscape, which can result in the displacement causing t ...
Packaging will fail if the Nativize Blueprint Assets option is used in a project containing a third-party plugin
UE - Gameplay - Blueprint Runtime - Jul 15, 2016If a third-party plugin is present in a project that is being packaged with the Nativize Blueprint Assets option turned on, the packaging process will fail because necessary header files in the plug ...
Actor Scale is not included when converting from Matinee to Sequencer
UE - Anim - Sequencer - Nov 16, 2016Actor Scale is not included when converting from Matinee to Sequencer ...
Blueprint derived from C++ class not saving correctly
UE - Gameplay - Blueprint - Jul 27, 2015The blueprint that the user is using loses some data when the editor closes and reopens despite saving all of the content. Note: Currently unsure of what exactly causes this but as I am able to rep ...
If a custom code class is modified and a Hot Reload performed, any existing unsaved Blueprints derived from that class can no longer be saved.
UE - Gameplay - Blueprint - Feb 19, 2015When a custom code class is changed and a Hot Reload is performed, any Blueprints previously made from that class can no longer be saved. Possibly related to [Link Removed]. WORKAROUND: Close and ...
Crash with Assert after adding large sections to landscape
UE - Graphics Tools - Terrain - Jun 7, 2023This is a regression as it does not happen in //UE5/Release-5.1.1 ...