Unable to change Actor Coloration View Modes in PIE

UE - World Creation - Worldbuilding Tools - Jul 20, 2025

When in PIE changing Actor Coloration view modes from the viewport visualisation mode [Liit] -> [Actor Coloration] -> ... Does not update correctly when switching view mode and sometimes isn't corr ...

FBX imported skeletal mesh has incorrect axis directions

UE - Editor - Content Pipeline - Import and Export - Aug 20, 2019

The axis the FBX is imported with has been inversed from prior versions. See attached screenshots. This causes issues specifically with vehicles, where the movement is happening into the forward dir ...

Error when Compiling an AIController Blueprint Class with an AIPerception Component

UE - AI - Aug 1, 2017

An error populated the output log when Compiling an AIController Blueprint Class with an AIPerception Component. This is not a Regression, as it Occurs in //UE4/Main. ...

UMG Size to Content issue

UE - Editor - UI Systems - Jan 20, 2016

TextBox(Multi-line) or EditableText(multi-line) in UMG blinks when it meets certain condition in editor. The condition is Both Size to content option for TextBox(Multi-line) or EditableText(multi-l ...

Modifying collision shapes on a Skeletal Mesh with multiple cloth assets crashes

UE - Simulation - Physics - Character - Aug 30, 2018

For skeletal meshes with multiple cloth assets in use, modifying any of the bone's collision body setup in the physics asset causes a crash.  ...

Client PlayerState is null on joining online session

UE - Networking - Jul 31, 2015

APlayerController::ClientStartOnlineSession() checks PlayerState at the start of a game after loading a level. Due to time needed to load in, client player state may may return NULL ...

Crash in FLandscapeRenderSystem on Mobile

UE - Graphics Tools - Terrain - Landscape - Aug 4, 2021

Similar issues have already been reported here for iOS [https://udn.unrealengine.com/s/question/0D52L00004vJelTSAS/crash-ios-in-flandscaperendersystemcomputesectionperviewparameters] and here [https ...

Error when exporting OBJ unattended

UE - Editor - Content Pipeline - Import and Export - Dec 1, 2020

When doing an unattended OBJ export with python. The export will fail and give the atteched callstack. ...