Unreal Engine Issues
Unreal Engine Issues
Editor will crash while instancing nested AIPerception component template subobjects in an AIController-based Blueprint class during compile-on-load.
UE - Gameplay - Blueprint - Mar 23, 2018User report of an assertion that fires on editor reload during an attempt to reload an AIController-based Blueprint class with a dependency on a child Blueprint class, both created in a previous edi ...
Toggling SetSimulatePhysics state on a Primitive component with a child PrimitiveComponent leaks PxShapes
UE - Simulation - Physics - May 23, 2016FBodyInstance::Weld did not check to see whether or not child components were already welded to a parent. This meant that whenever Weld was called, ShapeToBodiesMap would continue to grow in size, e ...
Editor Crashes When Duplicating Actor that Contains Additional Components
UE - Gameplay - Dec 11, 2015Attempting to spawn a copy of an actor that has components that were added to an instance of that actor in the level causes a crash. Spawning the actor without adding additional components to the in ...
Crash on Package When Using Nativizing Animation Blueprint Has AnimGraph Connected with Enum
UE - Gameplay - Blueprint - Dec 3, 2019If an AnimNode connected with Enum and AnimBP is nativized, the package will occur crash. Following settings is solve this issue. [BlueprintNativizationSettings] +ExcludedBlueprintTypes=/Script/En ...
Need addElement and addElements to allow single insertion instead of to all elements with matching tag
UE - Platform - Mobile - Aug 1, 2017Since multiple dict tags can be in a plist, not just the top level, need to be able to specify to only insert once. Adding an optional once="true" attribute to these commands in UPL will allow this ...
Actor Component properties can become "linked" across multiple Blueprints after a hot reload
UE - Gameplay - Components - Dec 3, 2018If code in an Actor Component class is changed (eg. a new UPROPERTY is added) and a hot reload is performed to implement the changes, the properties in the component can become linked across any Blu ...
State Machine events "Left State Event" and "Fully Blended State" not firing when animation is sequence is playing
UE - Anim - Gameplay - Aug 28, 2019State Machine events "Left State Event" and "Fully Blended State" not firing when animation is sequence is playing at the moment you enter/leave the state. ...
Linked animation graph doesn't trigger anim notifications on dedicated server.
OLD - Anim - Jun 15, 2020Linked animation graph doesn't trigger anim notifications on dedicated server. There is no expected message in log: LogBlueprintUserMessages: [HitReact_AnimBP_C_0] Client 0: HitNotify IsServer: tru ...
Crash: nullptr in FindViewComponentForActor when ActorComponent is attached to Character with Camera Component.
UE - Gameplay - May 17, 2019Selecting an Actor with a Camera and a C++ inherited Blueprint Component that has sub-components,then compiling the BP component leads to a crash. Upon Debugging the Crash Call Stack: FindViewComp ...
Validity of a workaround for an issue with MobileRenderer where RecieveShadow can't be rendered properly
UE - Platform - Mobile - Nov 11, 2024Dynamic instancing is likely causing an issue where meshes that need shadows are getting combined with meshes that do not need shadows causing missing shadows. Tests were done with CSMs. Reproducti ...