Unreal Engine Issues
Unreal Engine Issues
Non-edit layers landscape don't work adequately with Nanite landscape while painting
UE - Graphics Tools - Terrain - Landscape - Oct 24, 2023Result : while displaying the Nanite version of the landscape, the paint layers behave erratically (see video : [Link Removed]) If rebuilding the Nanite data, the bug gets fixed until the user sta ...
Curve Atlas Row Parameter uses derivative ops when Texture Sample connected to curveTime input
UE - Rendering - Architecture - Materials - May 1, 2026When a Curve Atlas Row Parameter node is used with a Texture Sampler connected to the curve time input, the sample type uses derivative ops. This has negative performance implications for Nanite co ...
Specular errors rendering in Highlight
UE - Graphics Features - Sep 21, 2015On certain assets, specular element is showing lines on an asset. [Image Removed] I have attached a Maya and FBX file of an asset which demonstrates this issue. ...
sRGB setting results in difference in Sprite Look compared to Texture Editor
UE - Graphics Features - Jan 16, 2015User is reporting an issue with the preview of a Sprite and its rendering in game differing from the Texture Editor based on sRGB setting. With sRGB = True: [Link Removed] With sRGB = False: [Li ...
Decals ignore Receives Decal Flag on movable static meshes on Mobile devices or Preview
UE - Platform - Mobile - Sep 10, 2015Decals when rendered on a mobile device or via mobile preview will ignore the receives decal flag. In Editor:[Image Removed] Mobile Preview:[Image Removed] ...
Editor Crashes When Undoing Paint Mode Selections
Tools - Sep 29, 2016Attempting to use the paint mode tool on meshes in the level and then undo/redo the changes will cause the editor to crash. ...
Non-public soft reference properties don't get PIE fixup
UE - Framework - Blueprint Editor - Jan 3, 2023Actor Soft References which have been set in the class defaults (not set per instance) don't seem to get the PIE path fixup when they're private. Toggling the property as private and public shows d ...
USD Stage - Import loses UV on a skeletalmesh with animation
UE - Editor - Open File Formats - USD - Apr 28, 2026https://forums.unrealengine.com/t/usd-import-issue-when-trying-to-import-skeleton-with-animation/2718449 I put another png has the user forgot to add theirs. ...
Can Not Add New Montage Section Name to a Montage on a Mac
OLD - Anim - Nov 21, 2017-Section Name shows up on Windows and not Mac -Does not occur in 4.17.2 Currently waiting to test in 4.19 ...
Shader Complexity does not function properly with Android ES2 or ES3.1 set as the Preview Rendering level
UE - Platform - Mobile - Feb 25, 2019A user has reported that Shader Complexity is not working properly in 4.21 with the Android ES2 or 3.1 preview rendering level settings. Regression?: No It did not look this way in 4.21 and prior v ...