Instance changes no longer propagating to ChildActor after updating from 4.11.2

UE - Gameplay - Jun 13, 2016

Function parameters do not appear to pass the correct information after updating from 4.11.2 ...

Return node pins lose connection after copy and pasting

UE - Gameplay - Blueprint - Feb 15, 2016

If the user copies and pastes nodes connecting to a return node in a function then the pins on the return node will become disconnected. ...

GI bounces missing from static SkyLight.

UE - Graphics Features - Sep 23, 2021

Potentially missing lightmass path for skylight that needs to imitate the static directional light GI solution. ...

IsPlayInMobilePreview does not return true when using Mobile Preview

UE - Platform - Mobile - Apr 11, 2019

A user has reported that the IsPlayInMobilePreview function does not return true when playing in Mobile Preview. From looking at the function, it seems to be looking specifically for the commandline ...

Crash in K2Node_CallFunction

UK2Node_CallFunction::GeneratePinTooltipFromFunction relies a lot on loops that increment the index used to check the individual characters in the comments. The problem is that there are a few miss ...

DemoNetDriver can cause ClearVoicePackets to be called multiple times in one tick

UE - Networking - May 18, 2022

Because DemoNetDriver doesn't override PostTickFlush, it will call the base UNetDriver's PostTickFlush. When both the game NetDriver and DemoNetDriver are ticked, this results in the online interfac ...

TraceString for TChar strings has an erroneous return statement leading to unreachable code

UE - Foundation - Insights - Oct 23, 2024

In StringTrace.cpp, the TraceString(const TCHAR* InString) function has an erroneous return statement before UE_TRACE_LOG_DEFINITION within the branch checking if the string is already in the set. ...

ResavePackages commandlet breaks sublevel translation

UE - Gameplay - Feb 26, 2019

Rebuilding lighting with commandlet will move hidden sublevels Confirmed in 4.23 MAIN @ CL 5194133 ...

MS_VertexAnimationTools_MorphTargets are not deforming and reforming

UE - Graphics Features - Sep 20, 2017

The Material should be contracting and expanding if it is working correctly, but after version 4.16 it is not. Instead it is solid in appearance in the material editor viewport. Below I have linked ...

Python cannot spawn object when running in Ueditor-CMD

UE - Editor - Workflow Systems - Dec 7, 2018

It is probably link to the fact the function try to access so GUI object that are not accessible in CMD EditorLevelLibrary.spawn_actor_from_object should work in commandlet ...