Instanced RepNotify variable doesn't update on client if altered in level

UE - Networking - Jul 8, 2019

An instance editable Rep Notify variable will not update on Rep Notify if an instance of if is edited in a scene. A demonstration project can be found here: [Link Removed] Found in 4.22 CL#7053642 ...

Packaging for IOS fails using SSH from a Windows Binary Build

UE - Platform - Mobile - Oct 23, 2019

Errors in the log: * Undefined symbols for architecture arm64: * "___isPlatformVersionAtLeast", referenced from: * FMetalResourceHeap::CreateBuffer(unsigned int, unsigned int, unsigned int, mtlpp ...

Dataprep Import Causing Unloaded Stream Levels to Reappear in Editor

UE - Editor - Content Pipeline - Visual Dataprep - Sep 22, 2023

[Audio Insights] - Insights continues to display virtual sounds after they have stopped being active

UE - Audio - Audio Insights - Jan 27, 2024

Virtual loops continue to be displayed in Audio Insights even after the sound has stopped being active for certain cases. This also occurs when stopping PIE while a sound is virtual. The sound will ...

Water not rendering in Movie Render Queue

UE - Graphics Tools - Terrain - Water - May 3, 2024

It appears that MRQ does not actually add the pass that updates the Water Info Texture in the WaterZone actor. If the Skylight is set to "SLS Captured Scene" and does not capture every frame, then t ...

Nested level visibility track bug

UE - Anim - Sequencer - May 31, 2024

The Level Visibility tracks part of a Subsequence are turned off every time you save the Leve Sequence. It does not happen if Level Visibility tracks are added in the main Sequence. ...

Missing PSO Precaches in the engine

UE - Rendering Architecture - RHI - Aug 20, 2025

A licensee wanted to report some missing PSO Precaching they found, which they have fixed locally: 1. UCableComponent doesn't implement CollectPSOPrecacheData or call CheckPSOPrecachingAndBoostPri ...

Crash When Loading Cooked Material Assets in Editor Due to Shader Serialization

UE - Rendering Architecture - Materials - Aug 27, 2025

In Unreal Engine 5.6+, the new shader serialization logic in FShaderMapResourceCode::Serialize does not correctly handle cooked assets that are loaded back into the editor (e.g., from a mounted .pak ...

Renaming variables in parent blueprint resets values for child blueprints

UE - Gameplay - Blueprint - Oct 23, 2015

Renaming a variable in a parent blueprint will reset the value of that variable for any child blueprint based on the parent within the level viewport. ...