Crash when hiding DataTable window and saving in DataTable Editor

Tools - Nov 20, 2017

When adding rows to a DataTable that has its DataTable tab hidden or exited out, the Editor will crash when adding a row to the DataTable. This crash happens in 4.17, 4.18, and 4.19. ...

Arabic Localization has both Arabic and English letters occupy the same space

UE - Editor - UI Systems - Localization - Mar 10, 2018

In past Engine Versions, Arabic Localization has not been in the Editor, but now symbols populate, but are split with English words. If Arabic is functioning, they should replace English words, not ...

Line trace fails to detect Destructible Mesh

UE - Simulation - Physics - Destruction - Jun 15, 2015

When using a line trace in the construction script so that objects can return a value destructible meshes will not return a hit. This does not affect use in game with PIE or Standalone game, but if ...

Changing transform of simulated component during physics freezes motion

UE - Simulation - Physics - Oct 13, 2016

If something is executed before a SetActorRotation node on Tick inside of a SceneComponent class BP and then added to an Actor class BP, the physics will lag User Description: When using set rotat ...

Blueprint Function Reorder displays error tooltip when trying to reorder functions

UE - Gameplay - Blueprint Editor - Dec 7, 2017

There is an issue when attempting to reorder blueprints where Blueprint Function Reorder displays error tooltip when trying to reorder functions. In previous engine versions, functions could not be ...

FScreenSpaceData in Material Custom Expression Does Not Work in 4.19p2

UE - Graphics Features - Jan 26, 2018

When creating a Post Process material in 4.19 with a Custom expression that uses FScreenSpaceData, material editor is unable to compile, and material renders incorrectly. This does not happen in 4.1 ...

Listen Server Without Microphone Will Drop Clients with Microphone if Voice is Enabled

UE - Networking - Mar 28, 2017

Listen servers that do not have a microphone hooked up are dropping clients that do have microphones when the client attempts to transmit voice. The log contains the following errors: [2017.03.28- ...

Cannot resize comment box when new comment is created on top

UE - Rendering Architecture - Materials - Apr 27, 2017

Cannot resize comment box when a new comment is created on top. The resizing affects the bottom right corner. This issue is dependent on how the comment is added if comment 1 is highlighted and a ne ...

GameplayTagContainers can cause a crash in packaged builds when Event Driven Loading is enabled

UE - Gameplay - Dec 15, 2017

A user has reported that using a GameplayTagContainer can cause a packaged build to crash when EDL is enabled in certain cases. In this case, if the base C++ class that includes this GameplayTagCont ...

Per Poly Collision Does Not Update With Morph Target

UE - Simulation - Physics - May 4, 2018

Per poly collision does not update with morph targets. Occurs with per poly collision enabled in both skel mesh editors and in details of editor. Video from user can be found in project folder att ...