Cannot create Editor Toolbar Button with the name "Button"

Tools - Apr 19, 2017

The plugin fails to be created with the name "Button". The name button or BUTTON works as a plugin name. If there are some names that plugins cannot be called, then an error/warning message in the o ...

Unexpected behavior from moving multiple widget components with render transform

UE - Editor - UI Systems - May 10, 2017

Unexpected behavior occurs from moving multiple widget components with render transform applied to them. The individual components seem to change relative position or rotation when being clicked and ...

Unreal Remote 2 does not send information about motion control

UE - Platform - Mobile - Aug 25, 2018

Unreal Remote 2 does not give information on motion control to PC. This is different from the description of the application. Use this application alongside Unreal Engine to view and control the de ...

Possession is not replicated properly to some clients

UE - Networking - Nov 8, 2018

A user has reported an issue where Possession replication or Character Movement replication, unsure of which, is not working properly for some clients. It seems to work fine for the first client but ...

Map container which has struct type value might be displayed inside unnecessary hierarchy

UE - Editor - UI Systems - Slate - Jan 23, 2020

Essentially, A bug in --[Link Removed]-- comes up with only customized struct property. If a struct doesn't have customization, it can be displayed compact without "Element X" node hierarchy. It i ...

NormalizePackageNames() should interpret 'exclude developer folders' to also exclude packages in ExternalActors and ExternalObjects

UE - CoreTech - Oct 14, 2022

In NormalizePackageNames() (PackageUtilities.cpp), there is a PackageFilter parameter, which can be set to exclude developer packages (NORMALIZE_ExcludeDeveloperPackages). The code only checks the b ...

Subsurface Profile Materials That Are Illuminated By Particle Lights Render White

UE - Graphics Features - Feb 9, 2017

Due to the changes made to subsurface profile (implementation of full resolution skin shading) it now renders white or with heavily faded base colors under certain conditions. In this case it is wh ...

Check() crash in merge tool when using SVN

UE - Gameplay - Blueprint Editor - Oct 21, 2015

A UDN user found a crash in the merge tool when using SVN. https://udn.unrealengine.com/questions/265740/crashbug-with-svn-merging.html The failing check() crash occurs in LoadBaseRev (Merge.cpp): ...

Bloom Blown Out In Forward Shading With MSAA and Separate Translucency Enabled

UE - Graphics Features - Mar 31, 2017

When a material is utilizing emissive color, separate translucency, and the project is using MSAA the material will give off intense bloom to the point of flashing the screen. [UPDATE] After addit ...

"Assertion failed: NumberOfFreeBits >= 0" on clients that attempt to connect to a server with the -NoPacketHandler option

UE - Networking - Oct 6, 2020

With the rework of IP address resolution in 4.25, this assert now occurs. When no packet handler is used, UPendingNetGame::InitNetDriver calls SendInitialJoin() immediately, before async address res ...