GearVR trackpad quadrant buttons not detected in TM-MotionControllers

UE - Platform - XR - Jul 12, 2017

Using the TM-MotionControllers map as a test for GearVR, the 4 buttons in the trackpad quadrants of the bluetooth controller don't register via the blueprint. This issue did not occur on Vive at th ...

Incorrect mouse position provided by the Get Mouse Position on Viewport node

Tools - Nov 6, 2017

The Get Mouse Position on Viewport node does not appear to give the correct position of the mouse in the viewport. The further the mouse is moved away from 0, 0, the greater the discrepancy appears ...

Niagara Systems Don't Scale With Skeletal Meshes When Called From a Montage

UE - Niagara - Jan 2, 2020

When a Niagara System is called from a montage is doesn't scale with the skeletal mesh that uses the montage. Attached is an example project. Found in 4.24.1 CL#1077647 Reproduced in 4.23.1 CL# 9 ...

HUD functionality is lost load after upgrading project to 4.24.1

Tools - Jan 22, 2020

Upgrading a project to version 4.24.1 results in a loss of functionality that worked from 4.20 to 4.23.1 without having made any changes. Test Project: [Link Removed] Tested: 4.25 CL: 11062379 ...

Re-parenting BP that inherits & overrides parent-functions mark's Graph not editable

UE - Gameplay - Blueprint Editor - Aug 28, 2020

After creating a Blueprint class and then creating a function inside the BP, then creating another BP that inherits from the parent BP and overriding the original function inside the new Class and t ...

Editor becomes unresponsive for long periods between edits of a user-defined enum type when it's referenced by one or more user-defined struct types.

UE - Gameplay - Blueprint - May 17, 2021

After adding a member to a user-defined struct type and changing the member type to a user-defined enumeration, repeated edits to that enumeration will eventually cause the editor to become increasi ...

IKRetargeter Export Selected Animations Saves Exported Animations Even When Cancelled

UE - Anim - Rigging - May 3, 2022

Occurs 3/3 times When 'Export Selected Animations' button is clicked and then canceled, animations continue to be saved.  ...

APlayerController::FlushPressedKeys is (incorrectly?) called when the client viewport loses focus.

UE - Gameplay - Input - Sep 3, 2021

When focus changes an IE_Released event occurs for the W key (your character stops moving) due to UGameViewportClient::LostFocus calling APlayerController::FlushPressedKeys. Because of the R key pre ...

[AI] BehaviorTreeEditor crash when swapping from Behavior Tree to Blackboard view.

UE - AI - BehaviorTree - Aug 24, 2023

The first time that a Behavior Tree editor window changes from the tree to the Blackboard can cause a crash if you add and remove a key from the Blackboard via a different Behavior Tree editor windo ...

[MetaSounds][Audio Bus] - MetaSound Sources using Audio Bus nodes spam underruns when Audio Mixer Sample Rate is less or greater than 48kHz

UE - Audio - Audio Bus - Oct 5, 2023

Setting the Audio Mixer Sample Rate to 32000kHz causes underrun spam in audio bus reader and writer nodes and sounds to playback jittery. Tested with 24kHz and 32kHz. Does not repro in //Fortnite/R ...