Unreal Engine Issues
Unreal Engine Issues
Wrong density calculation in UBodySetup::CalculateMass
UE - Simulation - Core - Sep 29, 2025Wrong density calculation in UBodySetup::CalculateMass. The licensee has provided the following analysis and suggested fix: In UBodySetup::CalculateMass, the following code is present: // physical ...
Connection is broken between Custom event and Collapsed Graph, which is promoted to Macro
UE - Gameplay - Blueprint - Oct 8, 2020When user promotes collapsed graph that has connection to custom event to macro, connection between that custom event and new macro is brokenThis is not the case when directly collapsing selected no ...
Moving a water body causes engine to drop fps and spike ms
UE - Graphics Tools - Terrain - Water - Apr 26, 2022Moving a water body lowers performance on the engine. The fps drop from 120 to 30 and ms spike from 8 to 30. This issue occurs in 5.0 Binary and 4.27 Binary on Windows. On Mac, FPS drop and ms spike ...
The layer option for grid panels do not appear to be having an effect on draw order
UE - Editor - UI Systems - Feb 1, 2016It appears that users are unable to order widgets within a grid panel so as to set what widget that would like to be in the front. The layer option in the details panel says that it affects draw ord ...
PHAT body collision is shown as smaller when looking at it in the main editor viewport.
UE - Simulation - Physics - Jan 19, 2016When a physics asset is set up for a Skeletal Mesh, the physics bodies are still visible in the main editor when using Show Collision (alt+C) but are extremely small. They are still oriented along t ...
[MetaSounds][Builder API] - Editor crashes when setting node position to a large value
UE - Audio - MetaSounds - Aug 9, 2023Setting the location of a node a the MetaSound Editor Subsystem to a very large value crashes the editor.Unhandled Exception: EXCEPTION_STACK_OVERFLOW Crash reporter link: [Link Removed] ...
Incorrect UV coordinates when visualizing mesh painting texutre on Nanite splines
UE - Rendering - Graphics Features - Jun 30, 2025The UV coordinates for visualizing the mesh painting texture on Nanite spline meshes are not working correctly. This runs the code in the NANITE_VISUALIZE_MESH_PAINT_TEXTURE section in NaniteVisuali ...
Changing between multiple Streams that are contained within an array does not work
UE - Gameplay - Blueprint - Mar 20, 2015Changing between multiple Streams that are contained within an array does not work. ...
Characters can fall through a rotating sprite that has been scaled
UE - Gameplay - Paper2D - Oct 23, 2014A scaled sprite does not appear to consistently maintain its collision for characters near its edges. I'm not certain whether this has anything to do with the character being in a fall state, but th ...
Procedural mesh loses collision when the "Add Procedural Mesh Component" node is copy&pasted (BodySetup is marked Instanced)
UE - Gameplay - Blueprint - May 15, 2017Procedural mesh loses collision when the "Add Procedural Mesh Component" node is copy&pasted. In this example the generated box appears to lose collision once an "Add procedural mesh component" node ...