Unreal Engine Issues
Unreal Engine Issues
TUnion copy constructor causes the editor to assert due to Unrecognized TUnion subtype
UE - Foundation - Core - Mar 15, 2016The TUnion copy constructor causes the editor to toss an assert due to it claiming that the passed in TUnion is of an Unrecognized TUnion subtype. ...
BP child not overriding parent's mesh in Nativized builds
UE - Gameplay - Blueprint Runtime - Jan 3, 2017The mesh on the right is a child of the one on the left, in a non-nativized cooked build it's a sphere, but in a nativized one, it's a cube. Regression: Working: UE4/Main, 4.15 CL 3233043 Broken: U ...
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. ...
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 ...
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 ...
Up Ratio on the Gear Setup for Vehicle Movement Component does not work correctly
UE - Simulation - Physics - Sep 11, 2015When changing Up Ratio for the Gear Setup in a Wheeled Vehicle's Vehicle Movement Component, there are some weird results. At 1.0 for Gear Setup, the gear should shift once RPM is at max but it will ...
Using 'Show Collision' in an execute console command node is crashing a packaged project.
UE - Graphics Features - Mar 30, 2015When packaging a project for any platform, If you have 'Show Collision' in an Execute Console Command, you will see the project crash once it is packaged. Log files from the crash have been attach ...