Unreal Engine Issues
Unreal Engine Issues
Smart Links are Removed During Dynamic NavMesh Regeneration
UE - AI - Feb 24, 2016Smart links disappear whenever the Nav Mesh regenerates while using Dynamic Runtime Generation. For example, if you have a dynamic object that is constantly moving and causing the Nav Mesh to rebuil ...
Niagara Memory Leak in vertex buffer when increasing particle spawn rate on CPU sims
UE - Niagara - Jul 16, 2019Increasing the spawn rate of a CPU particle sim will cause a memory leak in the vertex buffer. ...
CullDistanceVolumes don't update correctly
UE - Graphics Features - May 4, 2021Custom Playback Range does not work for the Movie Render Queue in Shipping Builds
UE - Anim - Sequencer - MRQ - May 16, 2022Saving 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 ...
Right-clicking in the Event Graph of a second Blueprint created using Create Blueprint Using This... will crash the editor
UE - Gameplay - Blueprint - Dec 9, 2014Right-clicking in the Event Graph of a second Blueprint created using Create Blueprint Using This... will crash the editor. Crash Report: [Link Removed] Call Stack:<unknown module>! KERNELBASE!Rai ...
Blocking volumes moved into sublevels from the persistent level do not correctly function in standalone game
Tools - Jun 9, 2015If a blocking volume is created in the persistent level and then moved to a sublevel, it will no longer correctly block objects in standalone game. ...
Overridden Interface Functions in Child BPs lose array output pins after closing/reopening the project and become invalid
UE - Gameplay - Blueprint - Feb 7, 2015Overridden Interface Functions in Child BPs lose array output pins after closing/reopening the project and become invalid. Reproduced in Main //depot/UE4/Promotable-CL-2434822 ...
Replacing Selected Actors does not replace all references.
Tools - Oct 21, 2015When using the "Replace Selected Actors with" feature in the editor, references to the replaced actor are not updated to reference the new actor (where valid). They will appear to be replaced until ...