The color picker stops working after changing the color once on a color property on a component

UE - Editor - UI Systems - Slate - Nov 13, 2019

Changing the color on a component property via the color picker will cause the picker to stop working until it's closed and reopened. This occurs because a property change event is sent out, and the ...

EQS Overlap test no longer recognizes custom Collision Object Channel

UE - AI - Nov 12, 2019

Environment Queries Ignore tests for Custom Collision Object Overlaps. Note: The expected behavior seems to have worked in 4.21, After following the steps to reproduce, I can verify a successful de ...

Sub Anim Instances Evaluate when not contributing

OLD - Anim - Nov 8, 2019

When using a sub anim instance, the instance will continue to update/evaluate even when its value is not currently contributing to the final pose. ...

Editor Crash when trying to get Color data from Vertex buffer

UE - Graphics Features - Nov 6, 2019

When attempting to get the vertex color of an instance of of a static mesh that is painted after placing it in the World Viewport. The Editor crashes returning an "Unhandled Exception". The cause o ...

Calling GEngine->Browse from an RPC implementation causes a crash

UE - Networking - Nov 5, 2019

The engine is not resilient to calling Browse from within an RPC implementation, and likely not resilient to other ways of destroying the net driver within RPCs/OnReps. It's not something we need to ...

Crash when Pasting a Gameplay Tag variable setter into a level Blueprint

UE - Gameplay - Blueprint Editor - Nov 4, 2019

Copying a gameplay tag variable setter from a blueprint into a level blueprint fails an assert in UGameplayTagsManager::GetCategoriesMetaFromField. ...

Internal Compiler Error: Tried to create a property Crash in scope Beta_C, but another object (ObjectProperty /Game/Alpha.Alpha_C:Crash) already exists there.

UE - Gameplay - Blueprint - Oct 31, 2019

After fixing the crash from [Link Removed] when compiling the child blueprint that has claimed the component name the parent was previously using without having compiled the parent, an internal comp ...

Crash when renaming a component to same name as a deleted inherited component.

UE - Gameplay - Blueprint - Oct 24, 2019

Fatal error "UE_LOG(LogObj, Fatal,TEXT("Renaming an object (%s) on top of an existing object (%s) is not allowed"), *GetFullName(), *ExistingObject->GetFullName());" is hit in UObject::Rename.  ...

Gameplay Abilities CancelAllAbilities not working as expected

UE - Gameplay - Oct 24, 2019

in AbilitySystemComponent_Abilities.cpp, line:844  CancelAllAbilities() does not appear to be working as expected.  There is a check before cancelling all abilities.  However, this check uses the Cl ...

Duplicating two nested components do not appear in the Component tree until the blueprint is compiled.

UE - Gameplay - Components - Oct 23, 2019

REGRESSION: No, this occurs as far back as 4.22. Duplicating two nested components can result in the duplicates not being visible in the component tree in the blueprint editor until the user compil ...