FAnimUpdateRateParameters::GetInterpolationAlpha appears to be returning an invalid value for TrailMode

UE - Anim - Aug 5, 2023

It appears that  FAnimUpdateRateParameters::GetInterpolationAlpha is not returning a sensible value when running in TrailMode.  Currently the only variable in the calculation is EvaluationRate which ...

Blueprints converted to static mesh with negative scales for a component will invert the faces

Tools - Dec 19, 2016

Negative scaled static mesh components in a blueprint will invert their faces when converted to a static mesh. Note that this does not happen in the following situations: If the BP is scaled negat ...

Assertion failed: ExportSettings == *ExistingExportSettings [File:D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\Lightmass\Lightmass.cpp] [Line: 546]

UE - Graphics Features - Sep 12, 2023

Generated from CrashReporter Logs can be obtained via Crash Reporter ...

Distance Fields no longer work with instances when PIE/Simulate

UE - Graphics Features - Apr 20, 2015

When using distance fields with instance meshes from the foliage tool everything works correctly, however, when simulating or PIE the distance fields will be removed. This working correctly in 4.7.5 ...

World Composition Browser sublevels register as edited/needs to be saved when levels browser is closed and reopened

UE - LD & Modeling - Terrain - Landscape - Mar 13, 2015

Sublevels appear dirty when the level browser is closed and re-opened. ...

Altering Player Controller in Gamemode resets upon reloading project

UE - Gameplay - Blueprint - Nov 26, 2014

If a user sets the player controller to a custom Player Controller inside of a gamemode, then compiles, saves, and closes both the blueprint and the editor. Upon reloading the player controller in t ...

When running multiple clients in PIE the second player's inputs become toggled every tick when setting Input mode Game only on tick

UE - Editor - UI Systems - Slate - Jul 9, 2015

A user has found that setting input mode to game only on tick will cause the client in PIE to toggle their inputs on and off every tick. If this test is run with a single player the inputs are const ...

Blueprint 'Select' node: nodes connect to all input pins are evaluated while only one input is needed

UE - Gameplay - Blueprint - Aug 15, 2015

Originally marked Won't Fix in 2017. Issue reopened on May 1, 2024. All inputs of a Select blueprint node are evaluated, even though in the end only one value is selected. This is wasteful work. ...

tvOS becomes non responsive after killing a launched on app from Mac

UE - Platform - Mobile - Sep 28, 2016

tvOS locks up with the following message being repeated in the device log:Sep 28 10:27:50 Apple-TV-Joey UE4Game[610] <Notice>: [2016.09.28-14.27.50:752][188]LogHttp:Display: Sleeping 0.5s to wait fo ...

Disabling Use Localized Graph Editor Nodes and Pins causes split struct pin names to disappear when compiling

UE - Editor - UI Systems - Localization - Oct 19, 2016

If the Use Localized Graph Editor Nodes and Pins option is disabled, compiling a blueprint will cause the pin names from any split struct pins to disappear. Regression?: Yes This occurs in 4.13.1 ( ...