Unreal Engine Issues
Unreal Engine Issues
Commonly used blueprint conversion functions should be promoted to top level category
UE - Gameplay - Blueprint - Nov 16, 2020Many useful blueprint utility nodes are buried in the Utility category and are not very discoverable by users. This leads to them choosing other nodes that are much less convenient and efficient. Th ...
[AI] StateTree Category = Input validation doesn't validate child properties
UE - AI - StateTree - Oct 10, 2025Normally if you have a property in your state tree instance data of the input property(Category = Input), when you compile the state tree, you will get errors if the property does not have a binding ...
Instanced EditInlineNew objects are parented to the CDO when used by a child BP of a parent BP that inherits from a native class
UE - Framework - Blueprint Runtime - Mar 21, 2024EditInlineNew objects added to Instanced array stored in a struct are seemingly ignored and the object is instead parented to the CDO of the owner. The owner must be the BP child of a parent BP tha ...
Following the 'Working with Modular Characters - Skeletal Mesh Merge Example' results compilation errors
UE - Anim - Feb 10, 2022This is a Regression. Tested in: //UE5/Release-5.0 CL 18747223 GitHub //UE4/Release-4.27 CL 18319896 Binary The example can't be completed in UE5 as expected presumably because of a change within ...
Crash when saving a Data Table that is referencing itself in a Data Table Row Handle
Tools - Feb 23, 2017Crash when saving a Data Table that is referencing itself in a Data Table Row Handle. Reopening the project also causes a crash. *Regression: Yes This was fixed and working in 4.13-3037605 This i ...
VS fails to compile when USTRUCT is referenced as BlueprintReadWrite or BlueprintReadOnly
UE - Foundation - Cpp Tools - UnrealHeaderTool - Aug 22, 2017Defining a FBoneReference variable as BlueprintReadWrite or BlueprintReadOnly in the UPROPERTY macro fails to compile in 4.17. The error message provided by VS states: LogCompile: Error: Type 'FT ...
Editing sets and maps of structures does not correctly check for duplicates
UE - Editor - Workflow Systems - Apr 12, 2022Customer created a custom DataTable with a TSet Property and saw the behavior of allowing duplicate elements within the TSet, which is not allowed. See TSet Documentation for more information. This ...
Missing RowStruct when opening a DataTable made with custom RowStruct
UE - Editor - May 13, 2022For some reason a datatable created in the editor, using a row struct built in c++, is corrupted after re-opening editor. Its row struct property is set to none. This is a regression. ...
Unnecessary extra condition check in PropertyStruct.cpp
UE - Foundation - Core - Nov 3, 2016On line 300 of PropertyStruct.cpp, there is the following if check:if ((Struct->StructFlags & STRUCT_SerializeFromMismatchedTag) && (Tag.Type != NAME_StructProperty || (Tag.StructName != Struct->Get ...
When the value of the TMap variable of the child blueprint is changed and compiled, it will restore to the default value of the parent blueprint.
UE - Framework - Blueprint - Sep 1, 2021For TMap variables of type struct created in blueprint, if change the default value in child blueprint and compile, it will restore to the default value of the parent actor. This problem does not o ...