Copied references to Texture2D assets are not formatted correctly when the .csv containing those references is made into a Data Table asset in the Engine.

Tools - Feb 26, 2015

Importing a .csv file that contains references to assets in the project requires the user to copy the references for each asset again before they will work correctly. The references do not need to b ...

Inconsistance Line Trace behavior

UE - Simulation - Physics - Dec 22, 2016

Line trace component appears to return a hit result even when the trace should not have had anything to hit. Attached project shows line trace start & end points. Even when the trace doesn't overla ...

Crash occurs in PIE when an Actor calls a method in a UObject that attempts to modify an FString member of the UObject

UE - Foundation - Core - Jan 31, 2019

The Editor will crash in PIE when an Actor calls a method in a UObject that modifies some FString members in the UObject. In the Attached project, the UObject class contains two FString members and ...

Framing an object after locking a camera in matinee closes the editor.

Tools - Sep 4, 2015

After creating a matinee actor and adding a camera group, I lock the camera group. Then I go back to the viewport and select a mesh in the scene. Pressing F to frame that object closes the editor wi ...

SSR Does Not Work On Mobile or Mobile Preview

UE - Platform - Mobile - Mar 7, 2017

In our Docs page SSR is listed as compatible with mobile here: https://docs.unrealengine.com/latest/INT/Platforms/Mobile/PostProcessEffects/ While testing this doesn't seem to be the case so either ...

Unable to Open Level in HTML5

UE - Platform - Mobile - Mar 16, 2016

Trying to use an Open Level function in HTML5 does not allow the level to actually load. Instead, the project flashes and refreshes back to its original position. Open Level function does work on W ...

FBX 2016 Z-Up fails to import on some FBX files

Tools - May 24, 2016

When using Z-up for Axis Conversion on export using FBX 2016 from a modeling program (3DS Max 2016 used for this test), this axis selection will fail to import with the warning listed below. If usin ...

Dynamic Nav Mesh rebuilds incorrectly on World Origin Shift

UE - AI - Jan 30, 2017

Dynamic Nav Mesh rebuilds incorrectly on World Origin Shift. It must be rebuilding (physics objects, etc) while the origin shift is taking place; then the nav mesh will rebuild at different heights ...

Navmesh does not update according to the volume, when an actor with a navigation volume tied to a parent is moved.

UE - AI - Navigation - Jul 14, 2023

When a NavmeshBoundsVolume or NavModifierVolume is parented to another actor in the outliner, navmesh is not updated along the volume when the parent actor is moved. If the volume is deleted and the ...

Object Scale Material Node Returning Incorrect Information When Rotated to Certain Angles

UE - Graphics Features - Jul 17, 2018

When using the object scale node in a material it will return incorrect values if rotated to certain angles. Found in 4.19 CL# 4033788, 4.20 Preview 20 CL# 4173640, 4.21 CL# 4209927 ...