Unreal Engine Issues
Unreal Engine Issues
AI Perception UnregisterSource Sense == nullptr does not affect pending adds
UE - AI - Perception - Jun 15, 2022UAIPerceptionSystem::UnregisterSource according to its documentation should treat Sense == null as targeting all sources, but the code for removing pending sources does not treat Sense == null as th ...
GAS: Mixed replication mode and error in MinimalReplicationTags code
UE - Gameplay - Apr 6, 2022We're on 4.25.4. We recently turned on mixed mode replication for GAS, which seems to work fine and reduce bandwidth as expected. However one of our unit tests started failing with this error messag ...
Input consumed by a widget's action binding can be skipped if using key modifiers
UE - Gameplay - Input - Oct 29, 2021The following code in UPlayerInput::GetChordsForKeyMapping is at fault for this: !(KeyMapping.bAlt || KeyMapping.bCtrl || KeyMapping.bShift || KeyMapping.bCmd || ActionBinding.KeyEvent == EInputEv ...
ListView does not update properly when game is paused
UE - Editor - UI Systems - Slate - Oct 12, 2021The ListView widget currently depends on the UWorld's timer manager to fire an event indicating new entries have been generated (see UListViewBase::FinishGeneratingEntry). This can become a problem ...
Once an actor channel is closed by NetCullDistance, root motion movement synchronization stops working
UE - Networking - Jul 12, 2021Properties that uses DOREPLIFETIME_ACTIVE_OVERRIDE (ex. RepRootMotion ) will also skip replication when an actor channel is newly opened. This means that if the variables on the server side do not c ...
Static mesh components spawned in the UCS along a spline require lighting to be rebuilt after a map reload.
UE - Gameplay - Components - Jun 17, 2021Seems to be somehow related to components being instanced in the Construction Script according to a spline. The transforms are slightly off by more than 1.e-2f. They are reconstructed on load with a ...
Each adding a static mesh not containing any collision data keeps increasing PhysX memory
UE - Simulation - Physics - Apr 19, 2021If the static mesh has UseSimpleCollisionAsComplex and does not have any SimpleCollision shapes, The physics actor will be destroyed immediately in FInitBodiesHelperBase::CreateShapesAndActors, but ...
An array of structures variable has its values reset when the structure is modified without recompiling the blueprint
UE - Gameplay - Apr 2, 2021An array of a structure that has been modified without the array's blueprint being complied results in the values of the array element being reset. Compiling each blueprint that has the array of str ...
SetEditorProperty does not propagate changes to loaded children blueprints
UE - Editor - Framework - Feb 8, 2021Changes on the Blueprint Editor are immediately propagated to the child blueprints. ...
Deterministic cooking issue caused by ParticleModuleTypeDataGPU
UE - Rendering - Niagara - Jan 18, 2021This problem is similar to the following case. [Link Removed] [Link Removed] It seems to have been fixed in 4.16, but the licensee reported it in 4.25. ...