Unreal Engine Issues

Given specific, non consistent, network connections, replication of some data can result in incorrect values

I appears to be possible to replicate a value and when the value gets to the client(s), it doesn't match what was sent from the server. In the project, ReplicatedActor is created by the Authority. ...

Buffer Visualization Overview is affected by EV

EV -0.5 [Image Removed] EV 0.0 [Image Removed] ...

Vertex editing 2 BSP brushes simultaneously reverts to local movement for brushes that have been rotated

Instance UObjects in an array on an Actor replaced by pointers to other objects in array while PIE

When this issue occurs printing out the addresses of each item in the array shows that elements 2 and 3 have the same address, so for some reason the second element's value is being overridden by th ...

Synthetic benchmark is affected by Scalability Settings

Sumo Digital Ltd. has reported that the synthetic benchmark has skewed GPUIndex scores when changing graphics scalability settings (i.e. r.LumenScreenProbeGather.DownsampleFactor). They are currentl ...

RootMotion travel distance get affected by ForceAnimRate

A root motion controlled character would travel further than they should when both EnableUpdateRateOptimizations is on and a.URO.ForceAnimRate is set above 1. Changing "Root Motion from Montages On ...

Expanding and altering a macro affects other macros in use.

Using the Expand node feature on a macro from a macro library alters the current functionality of other instances of the macros that are in use(even though the macros themselves have not changed). ...

ILC/VLM doesn't affect Static Staticmesh at all on Mobile

In practice, developer wants some Static-Staticmesh actors don't build lightmaps to save iteration time as well as Memory and Package size; but still want lit by Indirect lightings ...

Tilemap using Masked Lit Sprite Material not Rendering in Standalone mode

When using a Tilemap with a Masked Lit Sprite Material, the tilemap will not render while in Standalone. In the test project, the Paper2D Blueprint character was switched to Masked Lit Sprite Materi ...

When ParallelExecutor is enabled, Japanese build output of VisualStudio garbled

From UE4.20, Japanese build output of VisualStudio garbled. Below is a comparison between 4.19 and 4.20. ・4.19.2 1>------ すべてのリビルド開始: プロジェクト:MyProject3, 構成:Development_Editor x64 ------ 1> Clea ...