Error maximum ps_5_0 sampler register index (16) exceeded on some materials in InfiltratorForward

UE - Graphics Features - Dec 13, 2016

Certain materials no longer compile in InfiltratorForward with Forward Shading enabled. These materials were not having this compile issue in //UE4/Main @ CL - 3231640 which is the CL before Dev-Ren ...

Compile button disappears and Hot Reload stops working after failing to Hot Reload in some cases

UE - Foundation - Core - Jun 2, 2016

When failing to hot reload in some cases, the compile button in the editor will disappear and Hot Reloads will stop occurring. This tends to happen randomly in other scenarios but the method above i ...

Setting linear dampening during runtime via the event graph does not work for separated chunks

UE - Simulation - Physics - Destruction - Dec 18, 2014

DESCRIPTION: When using a DM in blueprints and setting the linear dampening in the event graph the DM will honor the linear dampening but the chunks as they break off will not. Setting the mesh to ...

Compile 'Note' on BP Interface events

UE - Gameplay - Feb 23, 2017

Compile 'Note' on BP Interface events. It happens in actor BPs and also BP Widgets. A similar issue was fixed back in 4.11 with Custom Events. Could be related? https://jira.it.epicgames.net/brows ...

Skeletal Mesh breaks perspective view in Physics Asset Tool.

UE - Simulation - Physics - Feb 19, 2016

When importing licensee's provided asset the Physics Asset generated will completely break the Perspective View in PhAT. The other orthographic views will work as intended though. The licensee has ...

Using Paint Verticies Single Color Node More Than Once Crashes Dev Build

UE - Graphics Features - Jun 10, 2016

[UPDATED INFO] After some testing I discovered that using the "Paint Vertices Single Color node" on event tick is what is causing the issue. Using this node with event begin play will not crash. Th ...

Wrong Anim Notify is Deleted

OLD - Anim - Jan 16, 2015

When deleting an Anim Notifiy in the Notify timeline, if an instance of that Anim Notify exists to the left of the selected one, it will be deleted instead. If numerous instances exist to the left ...

Startup Movies Fail to Play when Audio Devices are Disabled

Tools - Feb 1, 2016

If a user launches a project in Standalone mode and has a Startup movie while the audio devices on the computer are disabled, the movie will fail to play. As soon as you re-enable an audio device, ...

FInstancedStruct and TInstancedStruct in DeveloperSettings only write default values to configuration ini files

UE - AI - May 6, 2025

FInstancedStructs, or its TInstancedStruct sibling, can be included in a class that inherits from UDeveloperSettings. UDeveloperSettings will persist data in a configuration file. In the case of FI ...

Significant Frame Rate Decrease in Editor UI on Monitors with G-Sync Enabled

UE - Graphics Features - Feb 24, 2017

A G-Sync enabled monitor running @100Hz will drop from 100FPS while working in the Viewport to 50FPS when scrolling through the Editor Menu window. A G-Sync enabled monitor running @60Hz will drop f ...