Is Playing can return false on Sequence's second playthrough

UE - Anim - Sequencer - Apr 12, 2021

Playing a sequence more than once will have an incorrect player status on the first frame.  ...

Custom mode animation resets character pose on every change in the Sequencer

UE - Anim - Sequencer - May 30, 2024

Skeletal Mesh Components that use Custom Animation Mode will have their animation rest to the base position when any change is made to the Level Sequence that the character is used in. The Licensee ...

AttachChildren on the client can lose entries

UE - Gameplay - Jan 26, 2016

If a client attaches a scene component to a server authoritative scene component and that server component later has a change in attachment made on the server, the AttachChildren array on the client ...

Refraction breaks Translucent Sort Order without Separate Transparency Enabled

UE - Graphics Features - Jan 6, 2016

With multiple Translucent Material sorted in 3-D space or via Transparency Sort Priority, if one of the materials uses refraction it will render on top of the others no matter position or sort prior ...

Server crashes when client connects after Server has reloaded a sublevel with a deleted actor

UE - Networking - Jul 13, 2017

UNetDriver::DestroyedStartupOrDormantActors maintains a list of deleted startup (and dormant) actors. This is used to notify clients that have joined the server of Actors that need to be destroyed ...

Sky Lights don't effect Translucent materials

UE - Rendering Architecture - Materials - Nov 21, 2022

Regression: Tested in UE5/Release-5.0, this issue does not occur so it is a regression Appears to be an issue with Lumen and Skylights with Cubemaps. Directional lights, point lights, etc. all work ...

Material overrides not respected when generating HLODs.

UE - World Creation - Worldbuilding Tools - HLOD - Oct 1, 2024

When generating HLODs, it is possible for the generator to ignore material override settings. The generator will not respect the constants, and does not change them in the Material with a default se ...

Vector Field Initial Rotation will always have the same initial rotations for each emitter instance

UE - Niagara - Nov 11, 2019

The Vector Field Initial rotation module will have the same rotation for all instances of the same emitter. This is a regression from 4.22. ...

Get All Actors of Class is failing to report at Event Begin Play in a streamed level

UE - Gameplay - Sep 3, 2015

Get All Actors of Class is failing to report at Event Begin Play in a streamed level. Test project attached. This is a regression: did NOT occur in 4.8.3. Reproduced in 4.9.0 binary and Main (2678 ...

Particle System check for IsActive in Blueprints does not reset

UE - Graphics Features - Jan 4, 2016

When using a particle system in a blueprint and then moving the particle system off screen and then back on there is the node "Is Active" that can check to see if the Particle is still active. When ...