Unreal Engine Issues
Unreal Engine Issues
UE4.11.1 Crashes After loading the Substance Plugin
UE - Foundation - Core - Apr 13, 2016Regression: UE4.11.1 Crashes After loading the Substance Plugin. This did not Occur in previous versions of the Engine. Reported on Macs and PCs Full Error Message: Fatal error: [Link Removed] [Lin ...
Regression: Cannot import Landscape Layer Weightmap along with Heightmap because of broken resolution check for tiled images.
UE - Graphics Tools - Terrain - Jan 30, 2025When working in the "Landscape" editor mode, in both the "New" and "Import" tools, it is possible to import a single heightmap, as well as a weightmap for each layer. Each of these maps can come fro ...
K2Node_GetEnumeratorName doesn't support bitmasks
UE - Framework - Blueprint Compiler - Jan 29, 2025This is almost identical to [Link Removed]. The difference is that we need a variant of UEnum::GetNameByValue that supports bitmasks. We'll likely have to run this by Core. ...
Naming a Plugin with a number as the first character causes errors
UE - Foundation - Cpp Tools - Plugin System - Aug 27, 2015When naming a plugin, having a number as the first character causes a toast to pop up that says: "Failed to generate project files" However, the plugin is available to look at and edit in Editor, a ...
Multitouch on Windows offsets touch index by 1, starting at TouchIndex_2
Tools - Oct 18, 2016Touch input on Windows devices will start at touch index 2 instead of touch index 1, like other touch devices. ...
Shots with Time Scale less than 1.0 do not render from master sequence
UE - Anim - Sequencer - Sep 20, 2019Setting a shot's time scale to less than 1.0 will cause it to not be rendered. ...
Navigation becomes incorrect after flipping a widget via scaling (-1)
UE - Editor - UI Systems - Dec 22, 2015If the user flips a widget using the scaling feature in umg (scaling the widget by -1) this will cause the navigation for the widget to becomes incorrect. ...
Crash Generating Proxy Mesh with Transition Screen Size set to 1
UE - World Creation - Worldbuilding Tools - HLOD - Nov 18, 2016Crash occurs when attempting to Generate Proxy Meshes with Transition Screen Size set to 1. ...
Content Examples: Example 1.5 is stiff in Cloth Map
Docs - Samples - Apr 26, 2017Example 1.5 on Cloth Map seems very stiff in 4.16 compared to 4.15. Regression: Yes Works in 4.15 ...
Sphere Mask ArgInvHardness missing multiplication
UE - Rendering Architecture - Materials - Jun 27, 2025Hi Epic, In MaterialExpressions.cpp UMaterialExpressionSphereMask::Compile(), hardness is not calculated the same way in both <if> conditions. One is missing a multiplication by 0.01f. Specificall ...