Setting a ComboBox on the Server does not always work

UE - Networking - Oct 3, 2015

Setting a ComboBox on the Server does not always work. In the attached project, a Multicast Event runs some Set Options, all but one of which appear to work on both Clients and Server. On the Server ...

Inconsistent Prioritization of Navigation Modifiers

UE - AI - Dec 12, 2016

When working with Nav Modifiers in a level that contains objects that have a custom Nav Area class, the prioritization of the modifiers is not consistent. If you notice in the attached project, so ...

Crash if the number of spline points is less the one spline point currently selected

Tools - Feb 26, 2020

Spline components with "input spline points to construction script" enabled causes crash when selecting a spline point and reducing the total number of spline points below the selected spline. Te ...

Crash when duplicating the Child Actor Component class

UE - Gameplay - Components - Jun 3, 2019

Creating a blueprint class with a child actor component and setting its actor class to Point Light, then copying and pasting it causes the editor to crash. Tested in 4.21.2 (CL - 4753647), 4.22.1 ...

Two event graphs with similar names will populate events to only one graph in My Blueprint pane

UE - Gameplay - Blueprint - Jan 27, 2016

Two event graphs with similar names will populate events to only one graph in the My Blueprint pane. This specifically occurs when the event graphs are named with and without spaces in the name, suc ...

Apply mesh paint Blueprint instance changes and save fails

UE - Rendering - Architecture - Materials - Jun 22, 2026

After mesh painting on a BP Static Mesh Actor, and "Apply instance changes to Blueprint" the added virtual texture is removed with the log:LogTexture: Display: Building texture TwoD: /Game/FirstPers ...

Nanite Tessellation Artifacts With Landscapes

UE - Rendering - Features - Nanite - Dec 4, 2024

There seems to be an issue with how Nanite tessellation and Landscape interact with two sided landscapes. When the camera's near clipping plane is past the landscape's surface the displacement of th ...

Anim Notify States are ended when CustomTimeDilation is set to zero

UE - Runtime - Animation - Oct 12, 2022

UDN link: https://udn.unrealengine.com/s/question/0D54z00008BEDfJCAX/set-actor-time-dilation-to-0-during-a-animation-notify-state-cancel-it?fromCase=1 Notify gathering functions (e.g. UAnimSequence ...

Unable to select SimplePivotPainterExampleMat Instance's parameter settings if Param button is disabled

Tools - Aug 31, 2017

When going through the engine content you are unable to select SimplePivotPainterExampleMat Instance's parameter settings if Param button is disabled. If the button is enabled the settings appeared ...

Joining a session in PIE with Auto Connect To Server disabled will crash PIE

UE - Networking - Nov 11, 2015

Joining a session in PIE with Auto Connect To Server disabled will crash PIE. Note: this is not specific to the Multiplayer Shootout project used in the repro steps; this will occur in any project ...