Cascade velocity aligned particles jitter when "use local space" is enabled

UE - Niagara - Sep 2, 2020

Sprites in a particle system flicker/shake when use local space is combined with small velocity values and velocity aligned sprites. Reported and tested in versions 4.25.3(CL 13942748), 4.24.3(CL 1 ...

Orbit Selected actor feature is offset after panning

Tools - Jul 3, 2019

After panning the camera the orbit feature will become offset and can lead to the object no longer being in view while orbiting. ...

[CrashReport] UE4Editor_PropertyEditor!TWeakPtr<SDetailSingleItemRow,0>::Pin() [sharedpointer.h:1120]

Tools - Oct 30, 2017

This seems to be a new crash coming out of 4.18. It is not very widespread at the moment, but the callstack is very similar to [Link Removed], which was fixed for 4.18.0. Users have not provided a ...

Cached component instance data transform did not match! Warnings in Content Examples

Docs - Samples - Oct 27, 2016

Lighting is unbuilt in all levels in Content Examples. Multiple warnings appear in the log "Discarding cached lighting data which will cause lighting to be unbuilt" LogStaticMesh:Warning: Cached co ...

Client crashes after second seamless travel when a blueprint manually placed in the world spawns a replicated actor

UE - Networking - Sep 19, 2019

When a user loads into a level that spawns replicated actors using manually placed blueprints twice using ServerTravel with Seamless Travel enabled it will crash. It looks like the engine can't find ...

NavLinkProxy potentially causing extra Character Movement

UE - AI - Feb 12, 2020

The user is using a Nav Mesh Bounds Volume and a Nav Link Proxy. They are calling AI Move To to navigate to the point, but the Character reproduces extra movement and goes a bit past it. For debuggi ...

Actor reference in actor component is cleared after the containing actor is compiled

UE - Gameplay - Blueprint - Dec 19, 2017

A variable with an actor reference that is owned by an actor component will lose it's reference if the actor that it is applied to is compiled.  ...

Local binary build looks for code files using the original file path where it was first created

UE - Foundation - Core - Feb 14, 2018

A local binary build that is installed on a computer different from the one where it was originally created, with a different root directory location, attempting to go to the definition of a Bluepri ...

Soft Object unloads after some time when stored in a Blackboard

UE - AI - Mar 11, 2020

When loading a Soft Object and directly placing the loaded Object into a Blackboard, after about 2 minutes the Object will unload and become null inside the Blackboard. This issue only occurs in a p ...

Playing sequences in reverse snaps after sequence has first ran

UE - Anim - Sequencer - Dec 29, 2016

I first came across this bug when I was working with Actor Sequences and noticed that the door I had opening would snap back when I tried to close it. Later I discovered that the issue was with play ...