Unreal Engine Issues
Unreal Engine Issues
Delegate fixup doesn't work when bound functions are not in the current BP
UE - Gameplay - Blueprint - Mar 11, 2022When BP functions are bound to native delegates with float parameters, we perform fixup on the BP functions such that their float parameters are converted from double precision to single precision. ...
Misleading error message while attempting to drag in a BlueprintCallable Function into an Event Graph
UE - Gameplay - Blueprint - Feb 23, 2022An error message informs the user that a function does not have the BlueprintCallable keyword if the same function is using a native to blueprint communication keyword. The function/keywords are b ...
Components added in Blueprint that want initialisation are not maintained by RerunConstructionScripts
UE - Framework - Blueprint - Feb 14, 2024When a native component that wants initialisation is added to a Blueprint actor in the Blueprint editor, the initialisation state of this component will not be correctly preserved by RerunConstructi ...
Removing blueprint function does not remove graph nodes of the function
UE - Gameplay - Blueprint - Sep 13, 2017When a function in a blueprint (BP created or BlueprintCallable from code) has nodes calling that function in the event graph, deleting the function entirely does not remove the nodes that already e ...
Blueprint compiler doesn't always initialize struct consts correctly
UE - Framework - Blueprint Compiler - May 1, 2025Blueprints currently don't support unsigned 64 bit ints, but they do support signed 64 bits. If a Blueprint uses a native struct variable that contains a uint64 property, it incorrectly assigns that ...
4.18 Linux build errors using clang10
Tools - Nov 4, 2017(User report) Attempting to build 4.18 Linux using v10_clang-5.0.0-centos7 results in an error: specified path differs in case from file name on disk Note: There is another issue reported in the sa ...
Non-Struct CDO component properties display incorrectly in the property editor.
UE - Gameplay - Blueprint - Aug 17, 2016UObjectProperty properties within a UActorComponent class aren't exposed for editing in the Details panel when choosing to edit native component defaults in the BP editor. ...
The Blueprint compiler is not consistent with UHT when generating DefaultToInstanced variables
UE - Gameplay - Blueprint Compiler - Sep 7, 2023UnrealHeaderTool and the Blueprint compiler generate inconsistent metadata for object reference variables whose underlying class type includes 'DefaultToInstanced' metadata. UnrealHeaderTool-genera ...
Painted Vertex colors are not retained when using "Convert Selection to Blueprint Class" in Child Actor mode
UE - Gameplay - Blueprint - Aug 25, 2020From the User Submission: I spent some time poking through the FComponentInstanceDataCache code and noticed that there is no component instance data saved/applied for'native' component types, so si ...
Make PostProcessSettings reference to Blendables are listed as not tagged correctly
UE - Graphics Features - Dec 7, 2015Attempting to change the Weight of a Weighted Blendable at runtime via the Level Blueprint leads to a warning generated by the Make PostProcess Settings node:Warning Blendables - the native proper ...