Editor Freeze-Crash if Possessing Pawn with AI controller

UE - Gameplay - Mar 19, 2018

When trying to possess an already existing, uncontrolled character with an AI controller on server (from actor component) while in multiplayer mode, the editor keeps freezing until destroyed with t ...

User widget object is invalid when called in a widget component on BeginPlay

UE - Editor - UI Systems - Jun 25, 2019

User widget object is returning invalid inside of a widget component ...

Android API 30 LaunchURL Not Working

UE - Platform - Mobile - Jul 22, 2021

The LaunchURL blueprint node is not functioning when using non-default browsers in API level 30 on Android Devices. Another licensee reports that the default browser may not be relevant, as any brow ...

Rect light LTC textures fail to load when cooking with bSharedLinearTextureEncoding enabled

UE - Texture - Apr 2, 2025

When running a build with bSharedLinearTextureEncoding enabled, View.GGXLTCMatTexture and View.GGXLTCAmpTexture are pointing at the black texture fallback, which affects correctness of rect lighting ...

Particle Frequency Not Working As Expected

UE - Graphics Features - Mar 20, 2017

Particle frequency doesn't appear to have any visible influence on the particle system. You can test this by changing the particle frequency value on the particle system in the attached project. ...

Mac Editor crashes when deploying

UE - Audio - Apr 17, 2017

This issue occurs NO MATTER your deployment type. (e.g. PIE, Launch, Package...) This is BLOCKING all deployment from the Mac platform. This is a regression and does not occur on Windows. ...

Physics replication is not working correctly and clients receive different results

UE - Simulation - Physics - Aug 9, 2018

Physics replication is not working properly. The replicated physics are different than what is on the server. The user who reported this issue pointed out this line as well which seems to not do any ...

Landscape Paint Layers will not scroll to the end when using mouse wheel

UE - LD & Modeling - Terrain - Landscape - Sep 28, 2020

In a normal detail panel, each element has its own SDetailSingleItemRow and are mostly uniformly sized with some exceptions of having a few bigger rows (i.e. asset pickers). However, these layers ar ...