Unreal Engine Issues
Unreal Engine Issues
Crash running construction script after compiling BP function library
UE - Gameplay - Blueprint - Sep 15, 2020Editor can assert when changing the signature of an editor authored Blueprint Library Function (FuncA) if that function is called from a Blueprint Library Function (FuncB) via an actor's constructio ...
Current animation asset is lost in animation preview when a post process anim BP is compiled
UE - Anim - Runtime - Anim Blueprints - Aug 3, 2020UDebugSkelMeshComponent and PreviewInstance are lost current animation asset. There are 2 ways to fix below void UDebugSkelMeshComponent::InitAnim(bool bForceReinit) { // If we already have Pre ...
Cannot compile a nativized Blueprint with a function that takes an interface as an input parameter and uses it inside the function (e.g. dynamic cast to object).
UE - Gameplay - Blueprint - May 27, 2020Issue occurs because there is a legacy code path that forces all interface parameters to be declared as 'const' in function declarations, even if CPF_ConstParm is not set in exported C++ code. This ...
Making a navigation system 'strictly static' affects all subsequently created navigation system instances
UE - AI - Mar 26, 2020The problem is a result of two things: UNavigationSystemV1::bStaticRuntimeNavigation being staticUNavigationSystemModuleConfig::UpdateWithNavSysCDO copying the data from nav sys CDO, including bStat ...
Instanced EditInlineNew Objects not correctly propagating to children and placed level instances
UE - Gameplay - Mar 3, 2020Instanced EditInlineNew objects are kind of broken right now and hard to make full use of. In addition to the notes above, there are some cases where you can't even assign new values into the base c ...
Native struct types that declare one or more non-UPROPERTY fields are not initialized with the default value from a modified Blueprint CDO.
UE - Gameplay - Blueprint - Feb 12, 2020Dynamically-spawned instances of a Blueprint class go through an optimized property initialization pass (see UBlueprintGeneratedClass::BuildCustomPropertyListForPostConstruction() and InitProperties ...
Particle System Components don't inherit owner's time dilation
UE - Niagara - Feb 7, 2020This is a regression introduced by the particle system manager. It does not account for the owning actor's time dilation when ticking the particle system components. ...
Nativized UMG widgets with animation tracks can sometimes assert with async loading enabled.
UE - Gameplay - Blueprint - Jan 18, 2020The incorrect use of NewObject() to instance nested class-owned subobjects will force StaticAllocateObject() to reconstruct the instance that was already constructed by the outer class ctor in nativ ...
The vertex color view mode in the vertex painting editor mode ceases to work when the project setting "Extend default luminance range in auto exposure settings" is enabled.
UE - Graphics Features - Dec 31, 2019When "Extend default luminance range in auto exposure settings" is enabled, the Color View Mode in the vertex painting editor mode ceases to work and without any warning to the user. ...
Sequencer evaluation can skip events due to gaps in frame number ranges
UE - Anim - Sequencer - Dec 18, 2019Sequencer rounds when converting time ranges to frame number ranges, which can cause one frame gaps. If an event falls on that gap, it will not be triggered. ...