Unreal Engine Issues
Unreal Engine Issues
Not including StarterContent/Templates prevents engine .cpp files from appearing in project VS
UE - Foundation - Core - May 26, 2016If either/both of the "Starter Content" or "Template and Feature Packs" checkbox's are not selected when installing/updating 4.12 from the Launcher, the engine .cpp files will not show up in Visual ...
depth calculation is not functioning properly on mobile ES 3.1 preview
UE - Platform - Mobile - Systems - Feb 21, 2023In 5.1.1, the depth calculation is not functioning properly on mobile ES 3.1 preview, resulting in reflections occurring in areas where they should not. When checking with RenderDoc in ES 3.1 Previ ...
Material expression "FloatToUInt" can trigger a check() when input is invalid
UE - Rendering - Architecture - Materials - Mar 11, 2026When a "Float to UInt" Expression is used in a Material Graph with a valid direct input connection that fails to evaluate, function UMaterialExpressionFloatToUInt::Compile() does not catch the input ...
Virtual Texture Data GetNumMips reports one fewer mip than expected
UE - Rendering - Features - Feb 27, 2025FVirtualTextureBuiltData::GetNumMips() can return 1 fewer mip than it should due to a potential clamping issue at the end of FVirtualTextureBuilderDerivedInfo::InitializeFromBuildSettings() where it ...
Point light leaking throught thin geometry
UE - Rendering - Features - Oct 29, 2024In 4.27, ray traced point lights can leak through thin meshes. This bug does not exist in Unreal Engine 5, due to many of the potential rendering areas being fundamentally changed. ...
Nodes unavailable branching off Get Player Controller Unless Context Sensitive is unchecked
UE - Gameplay - Blueprint - Oct 23, 2014In a project in UE4.5, when opening an animation blueprint, in the Event Graph when the player branches off the "Get Player Controller" node to search for "Get Mouse Position" it will not be shown i ...
D3D Device Lost 'HUNG' crash in FD3D11Viewport::PresentChecked
UE - Graphics Features - Oct 31, 2016This is a new D3D crash affecting multiple users in 4.14 Preview 1. It is currently the #1 crash in the Preview. Information provided by users:Just pressed create project...Openning QA Game with - ...
Keyboard Shortcuts don't work on the Outliner Window if it is detached from the Main Window
UE - Editor - May 27, 2025Keyboard Shortcuts don't work on the Outliner Window if it is detached from the Main Window. As described in Steps To Reproduce, as soon as the Outliner Window is detached from the Main Window, most ...
Cursor radius set via FSlateApplication::SetCursorRadius is ignored during FHittestGrid hit testing
UE - AI Workflows - UI Systems - Slate - Mar 16, 2026The cursor radius configured through FSlateApplication::SetCursorRadius() is not respected during Slate hit testing. The radius value is correctly stored in FSlateApplication and passed into FHittes ...
All Classes Tab of Modes Panel Not Updating Automatically
Tools - Jun 2, 2016Blueprints are not appearing in the All Classes tab of the modes panel after being loaded until the tab is switched. Found in 4.12 binary. Reproduced in 4.11.2 binary and Main CL 2994701. ...