BP - Nativization will fail at cook time if a BP class and a User-Defined Structure reference each other.

UE - Gameplay - Blueprint - Apr 20, 2017

Note: This happens with "Exclusive" nativization mode as well. This occurs because the nativized UDS 'GetDefaultValue()' method is generated into a .h file rather than a .cpp file. This creates a c ...

Undoing pasting a component will crash ([CrashReport] UE4Editor_CoreUObject!FWeakObjectPtr::IsValid() [weakobjectptr.cpp:48])

UE - Gameplay - Components - Jul 20, 2017

This is a common crash affecting users in 4.16. The callstack is similar to [Link Removed], which was fixed in 4.13. User DescriptionsAccidentally duplicated a blueprint with multiple static mesh ...

[Feature Request] Select Node should allow you to right-click and reset a value pin back to a wildcard

UE - Gameplay - Blueprint - Jan 12, 2018

There is an issue where the Select Node does not Reset wildcard values for its pins. This issue does not appear to be a regression Versions Tested: 4.17.2 - 3658906 4.18.2 - 3794801 4.20.0 - 381396 ...

The screen will be darker than other platforms(Android,PC/Mac preview) on IOS if both MSAA and MobileTonemapperFilm enabled

UE - Platform - Mobile - May 16, 2019

[Image Removed] [Image Removed] [Image Removed] [Image Removed] ...

Skeletal Meshes with imported LODs will use the highest LOD when generating Nanite, rather than LOD0

UE - Graphics Features - Nanite - Jan 14, 2025

In the SkeletalMeshBuilder, Nanite is generated when enabled regardless of the LOD being requested. Since the Nanite enablement parameter is set on all LODs in USkeletalMesh::BuildLODModel and LODs ...

Unable To Add More Than One Element To Default Values For Maps In Blueprint

UE - Gameplay - Blueprint - Feb 13, 2017

When adding new elements to a Map in blueprints it will return the error "Cannot add a new key to the map while a key with the default value exists". This is because it currently won't increment the ...

UHT fails when building in VS if a function tries to return a UEnum pointer

UE - Foundation - Cpp Tools - UnrealHeaderTool - Mar 7, 2018

UHT will fail during build in Visual Studio if a function tries to return a UEnum pointer. Adding a valid keyword before the return type will compile successfully. ...

The Category setting for widgets return to "Default" after compiling

UE - Editor - UI Systems - Aug 18, 2015

When setting up categories for your widgets in the Event graph the categories will revert back to default after compiling the blueprint ...

StopMontage with different BlendOutTime not taken into account after first StopMontage

UE - Anim - Gameplay - Nov 19, 2024

When an animation is currently blending out due to automatic blend out or GameplayLogic, further StopMontage with specific BlendOut will not update the time to blend out of the current blending out ...

Landscape Sculpt Brush Gets Hidden Unexpectedly

UE - LD & Modeling - Terrain - Landscape - Nov 28, 2016

While sculpting (holding left mouse button) if you press the right mouse button the brush will disappear. The brush will remain hidden while sculpting until the right mouse button is pressed once ag ...