Only exactly matching structures are considered compatible

UE - Gameplay - Blueprint Compiler - Dec 31, 2022

in UE 5.0.2 open TestActor Blueprint compile correct.  but in UE 5.1 Blueprint Compile not correct ...

Can Ever Affect Navigation does not detect updates to collision settings at runtime

UE - AI - Jan 27, 2016

When a mesh has its collision updated during runtime the navigation around the mesh does not update. Workaround: If the mesh is set to simulate physics then updates to its collision will update nav ...

Typos in Math_Hall of ContentExamples

Docs - Samples - Sep 20, 2016

Need to update label from 0 to 1 on the left slider of display 1.6Need to update labels for small slider on display 1.10 to display 0, 1, 2 as those values can go up to 2Need to update 1.12 Example ti ...

Gamepad_Special_Left is bound to different buttons on Windows and Mac for P.S4/5 Controllers

UE - Gameplay - Input - Apr 20, 2022

On Windows: Gamepad_Special_Left is triggered by pressing the touchpad button On Mac: Gamepad_Special_Left is triggered by pressing the "Share" button ...

Up Ratio on the Gear Setup for Vehicle Movement Component does not work correctly

UE - Simulation - Physics - Sep 11, 2015

When changing Up Ratio for the Gear Setup in a Wheeled Vehicle's Vehicle Movement Component, there are some weird results. At 1.0 for Gear Setup, the gear should shift once RPM is at max but it will ...

Input Actions bound to Any Key become unresponsive after mouse scroll until scrolled again

UE - Gameplay - Input - Mar 28, 2025

In UE latest release (5.5 launcher version), Enhanced Input Actions mapped to "Any Key" stop responding after scrolling the mouse wheel. Specifically, scrolling either up or down disables the Any Ke ...

Negative values in Display 1.7 of the Math_Hall map are not graphed correctly in ContentExamples

Docs - Samples - May 4, 2017

This is a regression from 4.15.2 ...

Log Warning: LogRender:Warning: Missmatch between bShouldGenerateLowQualityLightmaps(0) and r.SupportLowQualityLightmaps(1)

UE - Graphics Features - Jul 13, 2016

The issue occurs in //UE4/Main as well. This issue can be easily seen by opening any project at latest. It has been observed in new projects both with and without starter content. ...

Foliage deleted in 4.6 and 4.6.1 appears in 4.7

UE - World Creation - Worldbuilding Tools - Foliage - Dec 23, 2014

Foliage that has been deleted in 4.6 will return when a project is migrated to 4.7. ...

Teleport only affects static mesh of destructible meshes, collision remains at original location

UE - Simulation - Physics - Destruction - Sep 15, 2015

Teleporting a destructible mesh only transports the mesh of the object, the collision remains where it was originally located. Further, if the player runs into the collision, the static mesh will re ...