Unreal Engine Issues
Unreal Engine Issues
When rendering a reflection capture, the lightmap may be rendered without finishing streaming.
UE - Graphics Features - Oct 5, 2021This problem occurs when you do a lighting build. It does not occur when the reflection capture is done by itself. ...
The HISM will have double drawcalls when player opens r.Mobile.AllowDitheredLODTransition
UE - World Creation - Worldbuilding Tools - Foliage - Nov 2, 2020Please check the Function GetDynamicMeshElements in HierarchicalInstancedStaticMesh.cpp. The Function Traverse in GetDynamicMeshElements will always return two Lod levels, even the transition is f ...
Puzzle template blocks turn gray when hovered over in Code version vs no reaction in BP version
Docs - Samples - Feb 3, 2017Functionality is different between code and bp versions of the puzzle template ...
Crash in IndirectLightingCache on level load
UE - Graphics Features - Aug 11, 2016May be a duplicate of this bug, which was closed due to no repro:https://jira.ol.epicgames.net/browse/UE-10978 ...
FAES::DecryptData does not decrypt the supplied input.
UE - Foundation - Core - Jun 22, 2016Something that has been encrypted with the FAES::EncryptData() function does not return to the original input when decrypted with FAES::DecryptData(). ...
Blueprint Implementable Events and Event dispatchers with the same name break the event dispatcher.
UE - Gameplay - Blueprint - Sep 22, 2015Creating an event dispatcher and BlueprintImplementableEvent function with the same names causes a signature conflict inside the blueprint. The event dispatcher is then broken as it cannot be delet ...
Lightmass export can fail with duplicated static mesh assets
UE - Graphics Features - Aug 30, 2017See https://answers.unrealengine.com/questions/853450/417-lighting-build-fails.html ...
GeometryScript: BlueprintCallable GetMaxMaterialID return pin is incorrectly named "Enabled" instead of "MaxID"
UE - Graphics Tools - Modeling Tools - GeometryScripting - May 2, 2025The return pin for the "Get Max Material ID" function is incorrectly named "Enabled" when the function returns the MaxID. See \Engine\Plugins\Runtime\GeometryScripting\Source\GeometryScriptingCore\ ...
Code review for potential fix for crash where Velocity contains NaN
UE - Gameplay - Aug 20, 2015User crashed in the function "void UCharacterMovementComponent::PerformMovement(float DeltaSeconds)" due to a Velocity containing NaN. AnswerHub post details function calls that lead to where the N ...
Unable to Open Level in HTML5
UE - Platform - Mobile - Mar 16, 2016Trying to use an Open Level function in HTML5 does not allow the level to actually load. Instead, the project flashes and refreshes back to its original position. Open Level function does work on W ...