Crash When Opening Static Mesh After Enabling Forward Shading And Disabling "Support Stationary Skylight"

UE - Graphics Features - Apr 17, 2017

After enabling forward shading and disabling "Support Stationary Skylight" opening a static mesh in the static mesh editor will crash the engine. REGRESSION? Yes Crash Did NOT occur in 4.15.1 CL ...

Adding entries to TMap in custom asset type not always reflected without restarting editor

UE - Gameplay - Blueprint - Aug 22, 2017

If you adding entries to a TMap in a custom asset type in the content browser, after a certain number of entries the last entry fails to be found with the "find" function for TMaps in blueprints, ev ...

Liftoff caused by root motion may leave a Character in walking movement for customized project

UE - Gameplay - Player Movement - Jan 31, 2024

If a Character has active root motion while walking (animation root motion OR a Root Motion Source), and this root motion causes vertical motion that "lifts off", it's possible for the Character to ...

Visualizing Custom Stencil Buffer returns incorrect results when an Actor with Render CustomDepth Pass enabled is visible

UE - Graphics Features - Sep 15, 2022

This is a regression tested in //UE4/Release-4.27 CL 18319896 Visualizing Custom Stencil Buffer returns incorrect results when an Actor with Render CustomDepth Pass enabled is visible. ...

Warning "Failed to build lighting!!! Static Lighting on World Partition maps is not supported." is thrown on World Partition maps

UE - World Creation - Worldbuilding Tools - World Partition - Mar 16, 2022

A warning is thrown "LogStaticLightingSystem: Warning: Failed to build lighting!!! Static Lighting on World Partition maps is not supported." when building lights in any World Partition map. ...

A custom Blueprint node created using a code class derived from EdGraphNode can no longer be found in the event graph to be used.

UE - Gameplay - Blueprint - Dec 9, 2014

Custom Blueprint nodes no longer appear in the event graph. This was working in 4.5.1, but no longer works in 4.6 and Main. Previously working: CL 2336109 No longer working: CL 2374938 CL 2375748 ...

Get viewport size returns unexpected values when Windows scaling is 125% or higher and High DPI support is enabled

Tools - Nov 26, 2018

Get viewport size node returns unexpected values when the user has set the windows scaling higher than 100% and has also enable High DPI support. ...

Line Trace by object not returning Component name when called from a custom event that is set to run on server when the component name contains a period

UE - Gameplay - Dec 15, 2015

If the user tries to do a line trace by object for an actor component that has a period in it's name (example "static.mesh") it will not return anything if it is called from a custom event that is s ...

Using Custom Primitive Data as Final Colour in a UI Material crashes the engine with a missing uniform buffer

UE - Rendering Architecture - Materials - Jul 3, 2024

Using custom primitive data as an input in a UI material causes the engine to crash in the RHI thread. The exact crash is "Missing uniform buffer at slot 1, stage SF_Pixel." at Engine\Source\Runtime ...

Adding a custom plugin to a code project that is in the root location of a drive will result in an error stating that the plugin was found in two locations

UE - Foundation - Cpp Tools - Plugin System - Nov 25, 2016

Creating a new custom plugin in the root location of a drive results in the project being unable to open or build. An error message appears that states that the plugin was found in two locations, an ...