A Behavior Tree reference to a Blackboard Key will become invalid when the name of the Key is changed in the Blackboard

UE - AI - Oct 5, 2015

A Behavior Tree reference to a Blackboard Key will become invalid when the name of the Key is changed in the Blackboard. Clicking on the Behavior Tree node that references the key will update the ke ...

Instanced sub-object property values get out of sync between parent and child Blueprints

UE - Gameplay - Blueprint - Jun 17, 2016

Also, another, possibly related symptom that should be looked into alongside this: Possibly related: 1. Set InlineObject to null on both character. 2. Assign new Inline Object to InlineObject on Ba ...

Logging in Shipping Builds on Android are not saving

UE - Platform - Mobile - Oct 17, 2016

Logs aren't being saved on Android devices, even when the source files are updated to reflect output logs. However, they were working in 4.12. iOS logs are showing up in shipping. ...

Notifies near start of animation do not trigger when played through slots

OLD - Anim - Apr 6, 2016

Notifies near the start of an animation do not trigger when played through slots with either the PlaySlotAnimationAsDynamicMontage or with a Montage. There could be other instances of this, but the ...

Crash Occurring in Standalone When a Loaded Sub Level Contains an Actor With a Child Actor Component

UE - Gameplay - Nov 30, 2016

Standalone is crashing when a map containing a sub level that has an actor containing a child actor component is streamed in, or if the level is set to be always loaded. To be clear, this is not c ...

[Crash] UE4Editor-MetalRHI.dylib!ReportMetalCommandBufferFailure()

UE - Graphics Features - Jan 25, 2017

Crashes when resizing Standalone game window by dragging lower right corner to and fro to increase/decrease window size. [Link Removed] Error message: SEGV_MAPERR at 0x3 Source Context:none Mos ...

GPU specific issue with Lighting while moving - GTX 770

UE - Graphics Features - Apr 26, 2017

While testing GPU - ContentExamples - Lighting - Nvidia gtx 770 in the 4.16 GPU Compat Pass, I noticed a strange effect on lights while the player is in motion. I've had multiple people attempt to ...

Changing foliage quality during runtime crashes editor/game

UE - World Creation - Worldbuilding Tools - Foliage - Oct 25, 2017

Editor will crash if a foliage type has Enable Scaling Density checked and user changes Engine Scalability Setting for Foliage during Runtime. Alternatively, if Foliage Quality is changed using a B ...

When using Blueprint Update Camera, New Camera FOV is taken into effect even if Return Value is false

UE - Gameplay - Oct 30, 2017

In a Player Camera Manager Blueprint, when overriding the function BlueprintUpdateCamera, the New Camera FOV value takes effect regardless of whether Return Value is True or False. The New Camera Lo ...

Applying Clothing Data Causes Mesh Vertex Color to Turn Black (or crash)

OLD - Anim - Jan 3, 2018

-When a clothing asset is applied to the mesh, the vertex color(s) change to solid black -Can be removed by right click Remove Clothing Data -Crashes in Main-4.20 -Can't be tested in 4.17.2 due t ...