Unreal Engine Issues
Unreal Engine Issues
Screen Probes and Specular Firefly Flickering near screen edges
UE - Graphics Features - Lumen - Aug 6, 2024Lumen's rough specular indirect lighting buffer can have fireflies along the bottom and right edges of the screen. Also tested in //UE5/Main, CL: 35177423 ...
When actors are placed in a folder their attachment dependencies are no longer loaded when the root actor loads
UE - World Creation - Worldbuilding Tools - Aug 12, 2024Iris - Missed subobject destruction can cause incomplete client state
UE - Networking - Iris - Oct 7, 2024From UDN assigned to [Link Removed] ...
Mirror operation on Physics Asset produces wrong results for constraints, including flipped axes
UE - Simulation - Physics - Feb 7, 2025The Physics Asset Editor has a "mirror" feature that allows physics bodies and constraints to be mirrored from one side of a skeleton to the other. If this operation worked correctly, it could save ...
Vector VM - Crash / memory stomp when using > 255 external function calls
UE - Niagara - Aug 12, 2025The Vector VM has only every supported a byte's worth of external function calls, when we blew the limit it would index into the incorrect VM call. The new VM will also overwrite memory when exceed ...
Sequencer crashes when using Transform variable added to Scene component BP
UE - Anim - Sequencer - Oct 18, 2021This issue has not occurred in previous versions and seems to occur from 4.27. ...
Instanced meshes do not accurately use volume light samples when lit in a statically lit scene
UE - Graphics Features - Aug 14, 2015When using instanced meshes in a Blueprint or in foliage tool the indirect lighting cache will not correctly light these meshes. I've include a sample project with map to demonstrate what the lice ...
Reset Instance Changes to Blueprint Default does not revert changes made to instances
UE - Gameplay - Blueprint - Sep 15, 2015creating an instance of a blueprint and making changes to the instance will not respect "Reset Instance Changes to Blueprint Default" when pressed from Details Pane. ...
Timeline name changes do not propagate to related nodes
UE - Gameplay - Blueprint - Mar 17, 2015Timeline name changes do not propagate to related nodes. Refresh All does not rename nodes that reference the timeline, and Getters and Setters are no longer valid nodes. Reproduced in 4.7.2 binary ...
While renaming a variable in the Details panel, clicking another variable will rename it instead
UE - Gameplay - Blueprint - Feb 11, 2015While renaming a variable in the Details panel, clicking another variable will rename it instead. ...