Unreal Engine Issues
Unreal Engine Issues
Material Layers "swap" location instead of shift downwards.
UE - Rendering Architecture - Materials - Oct 17, 2023Licensee request for this as it is affecting productivity. Likely requires a method of allowing a user to choose which behaviour they prefer. For reference, the behaviour changed in CL 11684461 to f ...
MRQ Linux/Mac - Log Spam: Unable to statfs('/render_output_path.{ext}')
UE - Virtual Production - Tools - MRQ - Dec 20, 2023When rendering with MRQ on Linux and Mac (not Windows), there is a lot of statfs log spam that appears repeatedly during the render: LogCore: Warning: Unable to statfs('/render_output_path.{ext}' ...
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 - Simulation - Gameplay - 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
UE - Anim - Sequencer - 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 ...
Ensure When Pasting Timeline Node that was Previously Connected to a Node into a Function
UE - Gameplay - Blueprint - Nov 4, 2016An ensure is occurring when pasting a timeline that was once connected to a node into a function in blueprint. Regression: No, this also occurs in 4.12.5. ...
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 ...