Unreal Engine Issues
Unreal Engine Issues
Skybox returns Overlapping UV error after building lighting
UE - Graphics Features - Dec 1, 2015After bringing the BP_LightStudio into a level and building light an error message is given. The error message says that the Skybox's UV's are overlapping. ...
Lightmap Density Of Imported FBX Offsetting When Lighting Is Built
UE - Graphics Features - Oct 8, 2018Lightmap density of imported fbxs will be offset when lighting is built. Working as expected in 4.19 CL# 4033788 Found in 4.20 CL# 4369336, 4.22 CL# 4433008 This is a regression ...
Optimization Viewmode Quad Overdraw Remains on Screen After Switching to Stationary Light Overlap
UE - Graphics Features - Jan 29, 2018The optimization view mode 'Quad Overdraw' image is not properly cleaned up when switching directly to 'Stationary Light Overlap' view mode. See attached images. ...
Colored Lights On Edge Of Screen In Cascade Preview Window
UE - Niagara - Dec 20, 2016While working in cascade (also in editor) with particles or stronger emissive values, glowing lights will appear at the edge of the screen. Note With bugs like this they seem to be tied to Radeon C ...
HUD functionality is lost load after upgrading project to 4.24.1
Tools - Jan 22, 2020Upgrading a project to version 4.24.1 results in a loss of functionality that worked from 4.20 to 4.23.1 without having made any changes. Test Project: [Link Removed] Tested: 4.25 CL: 11062379 ...
Crash duplicating or deleting any component inside of Actor BP if lights or triggers are present
UE - Gameplay - Blueprint Editor - Apr 25, 2017When duplicating or deleting a component whilst a point light is also a component within an Actor BP, the editor crashes. See callstack for info. This is a regression. Working: 4.15.2 Broken: 4.16 ...
references to interfaces remain in blueprints after being deleted when copying functions
UE - Gameplay - Blueprint - Nov 17, 2015If an interface is deleted from a blueprint and the functions are copied over references to the interface remain in the reference viewer of the editor. ...
Float Curve that is set as a local variable in an actor's function is garbage collected when in Standalone, causing a crash
UE - Gameplay - Blueprint - Sep 9, 2016If a Curve Float local variable is created for a function, it will be garbage collected when garbage collection occurs. This causes the process to crash due to an null pointer error whenever it is r ...
Saving Behavior Tree with Blueprint task inheriting from native class invalidates Blackboard key when BP contains a function
UE - AI - Jul 8, 2025A regression introduced in UE 5.6 causes Blackboard key selectors in Blueprint tasks to become invalid when the Blueprint inherits from a native subclass of UBTTask_MoveTo (or UBTTask_BlackboardBase ...
Mismatch of light position and PerObjectProjectedShadows
UE - Graphics Features - Jul 23, 2024Per-Object shadows cast by a stationary point light do not appear in the correct place on movable geometry. ...