Toggling visibility of Sublevels on a server can cause a disconnect if Dynamic Actors exist in the sublevels.

UE - Networking - Aug 17, 2018

The PackageMap / NetGuidCache appear to get into a bad state on Clients if the Server toggles level visibility of a sublevel. This can affect currently connected clients, as well as clients that jo ...

Ambient Occlusion decals ignore Receive Decals setting on meshes

UE - Graphics Features - Feb 13, 2020

Adding an ambient occlusion decal material to a decal affects objects with "Receives Decal" disabled. Tested in: 4.23.1 CL#9631420 4.25 CL#11341939 ...

Editor crashes if a data table containing an attenuation settings struct

Tools - Apr 19, 2016

Editor crashes if a data table containing an attenuation struct is opened in the data table editor. Frequency: 4/4 Crashreporter: [Link Removed] Regression? (No), issue (does) occur on 4.10.4 ...

OBJ file causes a `Debug Assertion Failed!` error

UE - Editor - Content Pipeline - Import and Export - Dec 23, 2015

When importing this users file of an OBJ asset there will be an assertion failed error. On the import message if you hit "ignore" until the mesh imports all will work in 4.10 or later. This was no ...

Crash on exit PIE after editing character blueprint of a code based side scrollers

UE - Gameplay - Apr 4, 2016

After editing character blueprint of a code based side scroller project, starting PIE will show the camera detached from the character and exiting PIE causes the project to crash. NOTE: This appear ...

Exporting and Reimporting static mesh created from BSP brush crashes editor

UE - Editor - Content Pipeline - Import and Export - Apr 12, 2016

Editor crashes if a bsp brush is turned into a static mesh, then that static mesh is exported from the editor and reimported. Frequency: 3/3 Crashreporter: [Link Removed] Regression? (Yes), issu ...

.wav files with max concurrency count data outside proper range will crash editor when played

UE - Audio - Apr 12, 2016

Editor crashes if a set of sound files provided by a user is played. This occurs in any project that the asset is migrated to. Frequency: 5/5 NOTE If the asset is exported outside of the editor ...

When using simple HMD plugin on mobile the camera can get stuck at 45 -90 angle even though the device it back in it's original position

UE - Platform - XR - Jan 19, 2016

If the user uses the simple HMD plug in, then launches on to a device and then follow up by spinning the device a few time the camera will become offset at an odd angle (Reset orientation and positi ...

LandscapeMountains demo has large performance drops at various locations around map

Docs - Samples - Dec 2, 2014

Landscape Mountains experiences heavy performance drops at various locations on map, specifically around ice lake in middle of map or when crashing. FPS varies from 50 FPS down to 11 FPS. ...

WindDirectionalSourceComponent needs functions like, 'SetSpeed'

UE - Graphics Features - Oct 22, 2015

Currently changing variables like Speed via BP/C++ has no affect. We need to add funcs like SetSpeed that also update the proxy. Would be nice to make the vars private as well. ...