Unreal Engine Issues
Unreal Engine Issues
CommonUI Analog Cursor + Enhanced Input triggers cause Gamepad Face Button Bottom triggers to get stuck when alt-tabbing
UE - Gameplay - Input - Jun 18, 2024Reproduction rate: 5/5 Regression check: No, this also occurs in 5.4.2. Please note that this issue only reproduces with the Gamepad Face Button Bottom and does not occur for any other gamepad butt ...
bStaticWhenNotMoveable in Lighting category instead of Physics
UE - Runtime - Character - Oct 24, 2025"UPrimitiveComponent::bStaticWhenNotMoveable"'s category is set to Lighting, not Physics. This causes it to be hidden when lighting-related properties are hidden, even though it controls physics sta ...
Sequencer - When a subsection has negative play rate, any nested sub-subsections fail to evaluate
zComponent - Archive - Jul 3, 2025Consider a sequence hierarchy with more than two layers. If the top-level sequence uses a negative timescale on a sub-sequence, the contents inside it animate as expected, but any nested sub-sequenc ...
UMG Viewmodel Plugin -- When setting up View Bindings, several arithmetic and comparison functions are missing from the "Conversion Functions" list
UE - AI Workflows - UI Systems - UMG - Mar 20, 2026When setting up View Bindings from the "UMG Viewmodel Plugin" on a Widget Blueprint, it is possible to select a compatible "Conversion Function" from the list of available bindings. By default, the ...
Failed to register input back buffer crash when opening a project with PixelStreaming on Windows 7
PixelStreaming - Sep 19, 2018Projects crash upon opening with the PixelStreaming plugin enabled. ...
Editor Crashes When Attempting to Change Units in Project Settings
Tools - Aug 17, 2016The editor crashes when attempting to make a change to the units located in Edit->Project Settings->Editor->Appearance. The crash occurs as soon as one of the dropdowns is clicked. This is a regr ...
Changing hierarchical instanced meshes' transforms on tick spams output log with warning
UE - Graphics Features - May 27, 2015When several Hierarchical Instanced Mesh Components are spawned and then their transform altered on tick, the log is spammed with the message: LogStaticMesh:Display: Discarded foliage hierarchy of ...
Changing the scale of the widget reflector makes it harder to select actors in the viewport
Tools - Dec 29, 2014When changing the scale of the widget reflector it changes the scale of the selection bounds of actors in the viewport. Example: When hovering over a box at a 2.0 scale I will select the wall someti ...
Crash when Changing Source File and Re-Importing Mesh used in Mesh Particle System
UE - Graphics Features - Aug 2, 2016A licensee has reported a crash when re-importing a mesh being used within a Mesh Particle system. Regression? Yes, this crash does not occur in the 4.11.2 binary release. Link to Crash Logs: [Lin ...
User cannot undo the automatic changing of Mobility settings
Tools - Sep 12, 2016When the users causes a component to automatically change its Mobility setting by changing that setting on a parent or child component, undoing that change only affects the manual change caused by t ...