Unreal Engine Issues
Unreal Engine Issues
Startup Movies not Copied to Content/Movies Directory in Content Browser
Tools - Oct 5, 2016Startup movies are not being copied to the Content/Movies directory within the Content Browser. This can be confusing to users as it is not editable, but still functions correctly as a startup movie ...
Rotated component made into root displays incorrectly in the blueprint editor
UE - Gameplay - Blueprint - Jan 25, 2017Rotated component made into root displays incorrectly in the blueprint editor. Closing and reopening the BP editor corrects the displayed root component. ...
Mobile Preview - Custom Stencil 4.23 Regression
UE - Platform - Mobile - Oct 25, 2019Regression when using custom stencil with in-editor mobile preview. This does NOT reproduce in MAIN at CL 9730599 ...
Depth Not Rendered Correctly When Using CustomProjectionMatrix in SceneCaptureComponent2D
UE - Graphics Features - Apr 15, 2020The depth is rendered incorrectly when using a custom projection matrix in SceneCaptureComponent2D. You can find an example project at [Link Removed]. You can find where the CustomProjectionMatrix ...
Skeleton mesh with hair strands material will lead to unnecessary draw call submissions
UE - Graphics Features - Mar 27, 2025Materials with "Used With Hair Strands" enabled will cause Skeletal Meshes to draw twice in the Base Pass. ...
Editor vs Runtime: Inconsistent data layer behavior when attaching actors
UE - World Creation - Worldbuilding Tools - World Partition - Jun 5, 2025In editor, data layer system respects the data layer settings for each actor, but at runtime, the condition check is made collectively for each actor cluster, resulting in differences in behavior. ...
Changing a value inside a struct exposed to blueprints removes struct from blueprints and gives error upon compiling and saving blueprint
UE - Foundation - Cpp Tools - Hot Reload - Sep 28, 2015If a user creates a C++ class that contains a struct and references that struct within a blueprint, making any changes to the struct within C++ header file will prevent the user from saving the blue ...
Exporting Mannequin to Blender then Re-importing to UE4 Incorrectly Rotates Animations by 90 Degrees
OLD - Anim - Jun 16, 2015Exporting the UE4 Mannequin to Blender then re-importing to UE4 breaks the animations, causing them to reimport rotated 90 degrees ...
Mouse loses focus after setting show mouse cursor to true and clicking anywhere on screen
UE - Gameplay - Input - Nov 17, 2014If the mouse is toggled to show by using "Set Show Mouse Cursor" and then the user clicks in the window the mouse will lose focus (the camera will no longer freely track the mouse) ...
No log files are being created for Windows Shipping builds
Tools - Dec 26, 2014When you package a project for Windows Shipping, The project will not generate a log file when the .exe project is played. The project will generate a log file if you package the project in the De ...