Enabling Anisotropic BRDF causes crash upon Editor restart

UE - Graphics Features - Lumen - Mar 13, 2020

Enabling the Anisotropic BRDF (beta) causes crash upon restarting the Editor. This was reported and tested in 4.25 Preview 2 (CL-12055273). This was reproduced in main 4.26 (CL-12161634). ...

OnAudioPlacebackPercentage PlaybackPercentage (float) doesn't take into account "Start Time" from Play or FadeIn nodes

UE - Audio - Aug 17, 2020

PlaybackPercent on the OnAudioPlaybackPercent event does not account for Start Offset from the Play or FadeIn node. Reported and tested in version 4.25.3 (CL-13942748) and version 4.24.3 (CL-115903 ...

Text Render Actor with Material Instance using Parameter crashes when playing Standalone Game

UE - Rendering Architecture - RHI - Aug 31, 2020

Material Instance with Parameters on Text Render Actor causes crash when playing in Standalone. Reported and tested in version 4.25(CL 13942748). Works as expected in 4.24(CL 11590370). ...

Crash occurs when adding code to custom node in Material Function.

UE - Graphics Features - Mar 16, 2021

A Salesforce ticket reports that entering the above code into a custom node in a Material Function causes a crash. I was able to repro his crash reliably. This is a regression. Working as expected ...

WrapBox->ForceNewLine() does not keep the slot on a new line.

UE - Editor - UI Systems - Slate - Apr 18, 2022

Repro Ratio: 4/4 Regression testing done in //UE5/Release-5.0-EarlyAccess CL-16682836 as this is a new feature to UE5. This issue Also happened in Early Access 2. ...

Cascade sprite scales incorrectly / flickers when set Screen Alignment to Velocity

UE - Niagara - Dec 10, 2019

Very easy to reproduce. uasset file provided. Doesn't happen in 4.22.3 ...

UWheeledVehicleMovementComponent no longer contains an IsFalling variable

UE - Gameplay - Dec 8, 2016

UWheeledVehicleMovementComponent no longer has an IsFalling variable. It originally inherited from UPawnMovementComponent which it gained this variable from but now inherits directly from UMovementC ...

[CrashReport] Assertion failure in NameTypes.h after CookOnTheFly

UE - Foundation - Core - Apr 25, 2017

This is a top crash occurring for users in the 4.14 and 4.15 releases. Unfortunately no user-descriptions of the issue have been provided, so information is limited. Despite a different callstack, ...

Crash duplicating or deleting any component inside of Actor BP if lights or triggers are present

UE - Gameplay - Blueprint Editor - Apr 25, 2017

When duplicating or deleting a component whilst a point light is also a component within an Actor BP, the editor crashes. See callstack for info. This is a regression. Working: 4.15.2 Broken: 4.16 ...

Mismatch widget component collision and geometry

UE - Editor - UI Systems - Jun 6, 2019

There is a mismatch of collision and geometry of WidgetComponent. This doesn't occur in 4.21. It can only be seen in 4.22. [Workaround] Change following code in UWidgetComponent::UpdateBodySetu ...