Crash when removing an item from a list view

UE - Editor - UI Systems - Apr 18, 2019

When removing an item from a list view the editor will crash when trying to update. ...

Overridden Events that can be called in editor are indistinguishable from their parent's counterparts inside of child blueprints

UE - Gameplay - Blueprint Editor - Apr 18, 2019

If an actor has a custom event that can be called in the editor and that event is then overridden by a child blueprint, both events will show up in the details panel. The issue is that these two eve ...

Cannot build Engine in Debug Editor configuration due to error caused by string literals in ClientSession.cpp

PixelStreaming - Apr 18, 2019

Attempting to build the Engine using the Debug Editor configuration results in a build failure related to a string literal (error C2338: Formatting string must be a TCHAR array.). There are three ch ...

High framerates result in desyncs with clients when using a dedicated server.

UE - Networking - Apr 17, 2019

When a client operates at a high framerate on a dedicated server, their player movement will become desynced with the server. This manifests in different ways on different versions. In 4.21, it caus ...

Camera FOV Above 90 Causes Landscape LODs to Flicker

UE - LD & Modeling - Terrain - Landscape - Apr 17, 2019

Camera FOV Above 90 Causes Landscape LODs to Flicker Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 5660361, 4.23 CL# 5934407 ...

Client crashes when executing seamless travel with an active particle system in the level that was spawned at runtime

UE - Niagara - Apr 16, 2019

Clients crash when being part of a Seamless Travel if there was an active particle system in the level that was spawned at runtime. If the travel is not seamless, the particle system is placed in th ...

SpiralBlur - SceneTexture When Attached to Base Color Generates Compile Errors

UE - Graphics Features - Apr 16, 2019

SpiralBlur - SceneTexture When Attached to Base Color Generates Compile Errors Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 5660361, and 4.23 CL# 5908927 ...

ARKit - ARKitCameraMaterial crash

UE - Platform - XR - Apr 12, 2019

Spawning an object with ARKitCameraMaterial will now crash the app. Tested with 2nd Gen iPad Pro (A1701) Verified in 4.23 MAIN @ CL 5806859 (Needed to install from IPA) ...

Runtime Errors appearing in Sequencer if fixed frame rate is set in projects settings

UE - Anim - Sequencer - Apr 12, 2019

This ensure happens only when the Start and End of the sequence is set in the "neigborhood" of the keyframe and only if the project framerate is to be Fixed on 60FPS. If you for example play the who ...