Unreal Engine Issues
Unreal Engine Issues
Landscape cooked heightmap and Physical Material mismatch
UE - LD & Modeling - Terrain - Landscape - Jun 19, 2015Several users have reported crashes where the Heightfeild loaded from the DDC and physical material list do not match. Suggest adding the number of physical materials to part of the cooked heightma ...
Tilemaps with masked materials respond to lighting at incorrect directions
UE - Gameplay - Paper2D - Nov 19, 2018Tilemaps using lit methods of rendering are subject to strange lighting behavior. If the material for the tilemap is using a 'masked' method of rendering. Lighting will appear at incorrect angles. ...
[AI] WP Dynamic navmesh fails to rebuild tiles with actors that are loaded but not part of the base navmesh.
UE - AI - Navigation - Feb 18, 2025WP dynamic navmesh does not properly react to actors or navigation modifiers that are loaded in areas that the navmesh has not yet streamed into. Although the actors/modifiers are not part of the ba ...
Set Members in Struct node doesn't work if the Struct is contained within an Array
UE - Gameplay - Blueprint - Dec 9, 2014Set Members in Struct node doesn't work if the Struct is contained within an Array. ...
Validity of a workaround for an issue with MobileRenderer where RecieveShadow can't be rendered properly
UE - Platform - Mobile - Nov 11, 2024Dynamic instancing is likely causing an issue where meshes that need shadows are getting combined with meshes that do not need shadows causing missing shadows. Tests were done with CSMs. Reproducti ...
Make Writable button does not work as intended when using Subversion
Tools - Oct 22, 2015When using the Make Writable button, it is intended to make the file editable without the prompt to check an asset out popping up on subsequent attempts to save the asset. This does not work for Sub ...
Option "Use Mouse for Touch" does not work correctly when running the game in "Standalone" or "New Editor Window (PIE)" modes: Virtual joystick does not appear and mouse cursor is incorrectly hidden while captured.
UE - Gameplay - Input - Apr 1, 2025The Editor provides option "Project Settings – Engine – Input – Mouse Properties – Advanced – Use Mouse for Touch" to allow testing virtual joysticks and other touch controls with the mouse. When ru ...
Editor 'Build All Levels' discards Volumetrics Lightmaps in persistent level
UE - Graphics Features - May 14, 2025Building the level or lightmaps can clear the volumetric lightmap. In 5.5, this requires you to perform a full build, or a lighting only build with a BSP brush in the scene. In 5.6, all level build ...
Crash when changing "MaximumTextureSize" in "LeaveExistingMips" state
UE - Editor - Content Pipeline - Import and Export - Dec 2, 2019No problem with 4.22.3 ...
Alt-tabbing out of a Standalone App or packaged version of a game does not trigger LostFocus or ReceiveFocus
Tools - Sep 9, 2015If a user uses Alt-tab to change to another window, the ReceivedFocus and LostFocus functions are not called as they would usually be called when using something such as Shift+F1 or Ctrl+Esc. Note: ...