Atmosphere related scan line artifacts for Path Tracer with MGPU

UE - Graphics Features - Path Tracer - Feb 10, 2023

There are two UDNs related to this issue.  It makes the Path Tracer unusable with MGPU, with atmosphere enabled. I already have a one-line fix implemented and tested.  The atmosphere scan line arti ...

Orientation Warping is rotating the mesh incorrectly on listen servers

UE - Anim - Gameplay - Apr 26, 2023

See UDN for details: [Link Removed] ...

Enabling ZenLoader causes editor crash when undoing Level Instance deletion

UE - CoreTech - Sep 5, 2024

Crash reported through UDN. With ZenLoader enabled, deleting a level instance and triggering Undo causes a crash in  ULandscapeComponent::PostEditUndo() The user has provided an example project th ...

Performance will drop in PIE if simulate physics is toggled rapidly on an actor with attached components

UE - Gameplay - Nov 3, 2015

Performance will drop in PIE if simulate physics is toggled rapidly on an actor with attached components User Description: Simulating physics for Primitive components causes severe performance dr ...

Editor windows do not lose focus when minimized on Linux

UE - Platform - Linux - Jul 28, 2015

Using Ubuntu 15.04, editor windows do not layer correctly when minimized. Control remains with the minimized window. Ex. After minimizing a blueprint window, right clicking will still act as thoug ...

Instanced meshes spread further apart as size increases

Tools - Jun 22, 2015

As the size increases on instanced static meshes, they spread further apart, causing unwanted breaks in tiling. This increase is proportionate to the increase of size. Note: Despite the collision ...

This Blueprint will not compile and causes a crash in 4.8

UE - Simulation - Physics - Mar 18, 2015

The MiningBuilding Blueprint in this user's project will not compile. Clicking the compile button never switches it to "Good to Go", and a warning that it needs to be compiled appears at PIE. Repro ...

Crash when Moving a Single Foliage Instance with over 15k Painted Instances

UE - World Creation - Worldbuilding Tools - Foliage - Apr 8, 2016

A licensee is reporting a crash when he transforms/moves a single instance of foliage, when there are 15,000 or more painted instances of that mesh in a single map. Regression Yes, I tested the sam ...

Most GameMode classes cannot be set in Blueprints

UE - Gameplay - Jun 14, 2015

Most GameMode classes cannot be set in Blueprints. Only Set Default Pawn Class and Set HUD Class have Setters available in Blueprints (the Getters are all still available). Reproduced in 4.8.0 and ...

Windows 64 bit option greyed out for shipping

When packaging your project for shipping, the windows 64 bit option will be grayed out. I also tested this issue out in main (2455917) and the option is able to be selected but with the 4.7.2 (246 ...