UMG/Slate scroll bars have a minimum size for scaling

UE - Editor - UI Systems - Mar 14, 2017

A user has reported an issue about scroll bars having a minimum size in UMG and Slate code, causing them to not scale correctly when the scroll box is at a smaller size. This affects both horizontal ...

Nested Spline Components cannot be edited

Tools - Mar 14, 2017

When a spline component is created in a class/blueprint (child) that is used as a component for another class/blueprint (parent), the spline component cannot be edited from the parent class instance ...

Ensure condition failed in FGPUSkinCache::InternalSetVertexStreamFromCache

UE - Graphics Features - Apr 12, 2017

This ensure has occurred with some frequency in the 4.14 and 4.15 releases, and has been reported in the linked UDN post. Though this Jira links to one specific CrashGroup in CrashReporter, there a ...

If Import animation is not enabled then morph targets will not be imported even if the model has them.

UE - Editor - Content Pipeline - Import and Export - Feb 1, 2017

Importing an asset with morph targets enabled, but with import animation disabled does not import morph targets. Note: if you open the asset and press re import the asset's blend shapes will reimpo ...

[CrashReport] Fatal error: Cast of nullptr to Actor failed - UE4Editor_CoreUObject!CastLogError()

Tools - Jul 19, 2017

This is a common crash affecting users in 4.16, and has been occurring since at least 4.14. It has affected more than 400 unique users, unfortunately they have provided little information. User Des ...

[CrashReport] - TRawMessageHandler<FTargetDeviceServicePong,FTargetDeviceProxyManager>::HandleMessage()

UE - Platform - Mobile - Jan 25, 2018

User comments:Packaging Android Crash with similar callstack fixed in 4.16: [Link Removed] I verified that the repro steps in that bug do not cause a crash in 4.18.3 Similar crash on Mac: [Link Re ...

Curves in compressed additive animations interpolate incorrectly when two keys in a row have the same value

OLD - Anim - Oct 16, 2019

Curves compressed from additive animations will not interpolate correctly if they have two keys in a row with the same value. The second key will be ignored, leading to the curve interpolating earli ...

Corrupted Japanese text when packaging for Android

UE - Platform - Mobile - Apr 17, 2020

Garbled text is displayed when creating Android package. It did not occur in my colleague's environment using English OS, but occurred in my environment using Japanese OS. This issue should be fixed ...

Improper include generated when C++ class is in a subdirectory

UE - Editor - Workflow Systems - Jun 7, 2022

This is not a regression from 4.27.2, however, a similar issue was fixed in 4.26. Generating a C++ class that is in a subdirectory generates the #include "Subdirectory/Class.h" instead of #include ...

Body Instance property changes made in construction scripts are not applied

UE - Simulation - Physics - Jul 17, 2020

7054614 was submitted to fix an issue with not being able to modify physics properties on instanced blueprints child components. This is related to [Link Removed]. This change causes BodyInstance t ...