ListView crashes when GlobalInvalidation is enabled.

UE - Editor - UI Systems - Slate - Jan 11, 2022

Reverting to the fix in [Link Removed] (CL#17788567) will avoid the crash. ...

Calling a native interface function implemented by a non-nativized Blueprint asset from a nativized Blueprint asset will silently fail at runtime.

UE - Gameplay - Blueprint - Apr 29, 2020

In the sample project we have a Widget Blueprint asset (SomeWidget) that implements a native interface (PrintSomethingInterface.h). However, in the DefaultEditor.ini file, we've also excluded all Wi ...

Custom Stencil Is Not Rendering In UI Materials

UE - Graphics Features - Nov 30, 2018

Widgets with a UI Material that uses Custom Stencil will not render meshes with a set stencil. This is working as expected in 4.19 CL# 4033788. Found in 4.20 CL# 4369336, 4.21 CL# 4541578, and 4.22 ...

EditInlineNew UObject properties in a UserWidget Blueprint are reset to None when the Blueprint is compiled.

UE - Gameplay - Blueprint - Nov 4, 2016

When a widget Blueprint that is derived from a custom UserWidget class containing a custom EditInlineNew UObject class property is compiled, any value that has been set in the UObject property is re ...

Making a Movie Scene Section Parameters struct in Blueprints will use the incorrect Can Loop values

UE - Gameplay - Blueprint - Jul 26, 2021

Can Loop is the edit condition for two other values in the struct, and those will have values by default when the node is created, so Can Loop will be true in the make struct node.  You can work ar ...

Virtual joysticks is not properly working when running multiple clients in PIE

UE - Editor - UI Systems - Slate - Nov 21, 2017

When running multiple clients in PIE, It looks like first created viewport client handles every input event. I tried to narrow down the causes and found that it's because SlateApplication knows jus ...

Editable text box caret blinks slowly when manually setting focus

UE - Editor - UI Systems - Oct 18, 2018

For some reason, it appears that manually setting the focus (whether it be user, keyboard, or both) on an editable text box in UMG causes the caret to blink slowly. However if you were to manually s ...

ChildAnimBP with different skeleton than parent does not show child skeletons anims in AnimGraphOverrides

UE - Anim - Runtime - Anim Blueprints - Jul 31, 2020

Create a Parent AnimBP, add any animation to it. Then create a childAnimBP from Parent. In ChildAnimBP, go to TargetSkeleton (from class settings) to change a different skeleton. Then go to the Anim ...

Unable to edit double variable in property matrix

UE - Editor - Workflow Systems - Oct 2, 2023

Since UE5.0, cannot edit double variables in property matrix. In UE4.27, it worked correctly and could be edited from the property matrix. This is because double variables are not supported in SProp ...

[CrashReport] UE4Editor-MetalRHI.dylib!FMetalDynamicRHI::RHICreateVertexBuffer - FSkeletalMeshVertexBuffer::InitRHI

UE - Graphics Features - Jul 27, 2017

This is a common and longstanding crash on Mac. The callstack shares similarities to the Windows crash [Link Removed] and may be related. User DescriptionsMy PC is too Low Spec? Callstack from Lo ...