Unreal Engine Issues
Unreal Engine Issues
PropertySet : changes in instancedstruct are not detected by the watch
UE - Graphics Tools - Modeling Tools - GeometryScripting - Jan 24, 2025Hi, I tried to use for a scriptable tool the watch property node for a struct. The objective for me was to offer to my user a view of a struct in the scriptable tool and have these modifications b ...
FEnhancedActionKeyMapping struct has incorrect comparison results
UE - Gameplay - Input - Nov 11, 2022The fix for this is to override the FEnhancedActionKeyMapping::operator== to account for the deep copy that happens on modifiers instead of comparing addresses ...
[AI] Editor crashes when editing values of an FInstancedStruct's TArray inside of a BP
UE - AI - Jun 30, 2023While using a custom struct that contains a TArray member variable with FInstancedStruct, you cannot edit it in the editor without a crash. Other structs and types work as expected even if they deri ...
Nativizing Blueprint fails when struct is not initialized properly
UE - Gameplay - Aug 27, 2018The PreferredNavData member of NavAgentProperties isn't properly initialized. It is using some constructor that doesn't seem to be valid. This is a regression from 4.19.2 (CL-4033788) as this same s ...
Sequencer events with a payload of struct containing Object do not work
UE - Anim - Sequencer - Dec 12, 2024A structure containing Object as a parameter is misrecognized as a single Object and loses the parameter. This behavior was brought in by CL-27785664. ...
Enumerators not setting data correctly in BP struct from .csv file
UE - Gameplay - Blueprint - Dec 24, 2014Enum data is not correctly setting names in the data table when pulling data from a .csv file. ...
Setting a struct bool property (bitfield) to itself writes the wrong value
UE - Framework - Blueprint Compiler - Sep 17, 2025There's an issue when assigning a bitfield bool to a native bool in Blueprints. Currently, the engine erroneously treats the memory for a local bool as a uint8 bitfield, which is undefined behavior. ...
SlateRemote: Message serialization does not take byte order and struct packing into account
UE - Foundation - Cpp Tools - Plugin System - Sep 15, 2016The message serialization code in SlateRemoteServer should use FArchives for de-/serializing its messages. The current implementation is not platform/compiler agnostic. ...
Copying struct value using Set node from null source crashes
UE - Gameplay - Blueprint - Jun 23, 2015Trying to access a Game Instance in a Blueprint's Construction Script results in a crash in 4.8 and 4.9. No crash occurred in 4.7.6 with the same Blueprint. This crash only seems to happen if the v ...
Blueprint dirty after PIE if blueprint contains a reroute node for a Key Struct
UE - Gameplay - Blueprint Compiler - Jun 19, 2017If a blueprint contains a reroute node for a key structure it will cause the blueprint to become dirtied (needs to be compiled) upon exiting PIE. ...