Unreal Engine Issues
Unreal Engine Issues
Editing and committing changes to a PackedLevelActor Blueprint results in a crash
UE - World Creation - Worldbuilding Tools - Level Instances - Apr 5, 2022Repro Ratio: 3/3 Regression was tested in //UE5/Release-5.0-EarlyAccess CL-16682836 since this is a new feature of UE5. The issue did happen ...
Sequencer crashes when scrubbing characters with sub-anim instances and montage slots
OLD - Anim - Oct 2, 2019I saw a following assertion. Assertion failed: (AdditivePoses.Num() > 0) || (NonAdditivePoses.Num() > 0) [Link Removed] [Line: 1381] This is my quick fix// code placeholder void FAnimInstance ...
Movie Render Queue Renders Black Frames when MultiSample Effects Are Disabled
UE - Anim - Sequencer - MRQ - Apr 25, 2022Occurs 5/5 times. When 'Disable Multisampling Effect' is enabled, the Render Warm Up is set to 0, and the Custom Playback Range is set to a small value, frames render out fully black. Regression d ...
Incorrect relative location on client under certain attachment conditions
UE - Networking - Nov 30, 2021An attached actor's relative location isn't correct on the client when the actor has its position changed to that of the parent actor before attaching with the "Keep World" location rule. On the cli ...
Color and Opacity animation option does not play for Button component
UE - Editor - UI Systems - Aug 25, 2017Color and Opacity animation option does not play for Button component, this occurs both in the Widget editor and during play. This issue is not a regression Versions Tested: 4.16.3 - CL: 3561208 - ...
Crash after Splash Screen on Android (ETC2) when Adding r.UseShaderCaching and r.UseShaderPredraw
UE - Platform - Mobile - Jul 20, 2017A crash occurs when adding the two rendering variables 'r.UseShaderCaching' and 'r.UseShaderPredraw' when deployed to an Android device packaged for (ETC2). I ran a few more tests to try and isolat ...
Foliage's Landscape Layers are not reflected when Landscape is rotated
UE - LD & Modeling - Terrain - Landscape - Feb 19, 2020This problem seems to occur because Rotation is not taken into account when calculating Weight. I have confirmed that it can be solved by calculating the rotation as follows.float ULandscapeCompone ...
New Viewport Resolution setting increases every time a new PIE window is launched
UE - Editor - UI Systems - Slate - Sep 2, 2022When closing a PIE viewport, we write the size back to the New Viewport Resolution setting in case the window was resized during play. However, we do not account for the window border, and write bac ...
Roughness rendering differently on Macs
UE - Graphics Features - Oct 4, 2016The roughness value for Macs renders differently (less rough or glossy) compared to Windows. It also seems to render as expected within the Material Editor preview window, but when applied to an obj ...
FBX files with multiple Meshes with only 1 unwrap per mesh will have invalid Light Map coordinates assigned
Tools - Jun 8, 2014An FBX with Multiple Meshes and only one unwrap per mesh (no 2nd UV channel) will import the first mesh in the file correctly but will produce invalid lightmass settings on each additional mesh impo ...