Unreal Engine Issues

Unwanted black boundaries are displayed in a vertical split-screen with 3 players.

Floating point error from UGameViewportClient::SplitscreenInfo causes this issue. FMath::TruncToInt( 3240 /*ViewportSize*/ * 0.333f/*Ratio in SplitScreenInfo*/ ) = 1079 I suggested a following t ...

Crash to desktop after creating Level Sequence with Widget Blueprint

Newly created Level Sequence assets cant be opened when they have been created via Editor Blueprint Widget. They are created successfully through a button click for instance, but when you try to ope ...

Crash when resetting asset import data in static mesh editor

Niagara system loses source emitters when moving Engine from 4.22 or earlier to 4.23 or later.

The following code causes this behavior.// NiagaraSystem.cpp for (FNiagaraEmitterHandle& EmitterHandle : EmitterHandles) { EmitterHandle.ConditionalPostLoad(NiagaraVer); if (!EmitterHandl ...

Don't display events in blueprint function with profile stats.

When look at stats in Unreal Frontend, can see the events that run in the function. It work in 4.21, but it doesn't work in 4.22. ...

None referenced NiagaraEmitters are contained in packaged game

[Image Removed] It's just storage waste. Because those assets will be never loaded on runtime. ...

Android: Mali Txxx GPUs Encounter Stretching Geometry When Running with Support GPU Scene Enabled

When attempting to run SunTemple with r.Mobile.SupportGPUScene enabled on some Mali GPUs, the project renders with what looks like pieces of the geometry stretching across the level and bending out ...

Resetting the RGB values of a Sky Atmosphere's Absorption

Resetting the RGB values of the Absorption to a Sky Atmosphere using the 'reset to default' arrow still appears after pressed. Tested in: 4.25 CL#10387577 ...

Start ARCore Session - Session config fails

ARCore Regression Not seen when updating 4.23 project to 4.24 This did NOT reproduce when updating 4.24 project (Created with Preview 4) to 4.25 MAIN 10406617 ...

It may be possible to send an actor RPC before successful replication of the actor

It was reported on UDN that it's possible to receive an RPC for an actor before the actor itself has replicated. The net driver tries to prevent this possibility by calling ReplicateActor in UNetDri ...