Unreal Engine Issues
Unreal Engine Issues
Undo deleting a Set or Map member variable will add it back to datatable in reverse order if it was changed
UE - Gameplay - Jan 9, 2018When undoing the deleting of a struct set or map variable, the order of the entries will be reverse in any datatable that's based on the struct. This only occurs if the entries have been modified i ...
FDateRange cannot be declared as UPROPERTY
UE - CoreTech - UObject - Sep 4, 2024Unlike other range wrapper structs, such as FFloatRange, marking a FDateRange as a UPROPERTY results in the following error: error : Unable to find 'class', 'delegate', 'enum', or 'struct' with nam ...
Custom structure in blueprint corrupts Project
UE - Gameplay - Blueprint - Feb 12, 2015Adding a custom Struct appears to crash the user project (possibly circular reference issue ) ...
Custom Node plugged into World Displacement cannot convert from FMaterialTessellationParameter to FMaterialPixelParameter
UE - Graphics Features - Nov 30, 2015Custom Nodes plugged into World Displacement are yielding:Error [SM5] error X3017: 'CustomExpression1': cannot implicitly convert from 'struct FMaterialTessellationParameters' to 'struct FMaterialP ...
D3D12 Does Not Correctly Validate Static Uniform Buffers Correctly
UE - Rendering Architecture - RHI - Feb 12, 2025When adding a Uniform Buffer Struct that has one 4x4 matrix to a mesh pass, validation will fail, due to a Uniform Buffer Struct mismatch. This can be reproduced by adding a mesh pass in project-si ...
Input pin disappears if split on GetScreenSpacePosition node
UE - Gameplay - Blueprint - Jun 16, 2015If the input pin of a GetScreenSpacePosition node is right clicked and then the user presses "split struct pin", the pin will disappear. Workaround: Press refresh node in RMB context menu. ...
Chinese translation is incorrect in some situations in the Editor
UE - Editor - UI Systems - Localization - Apr 23, 2019A user has reported that the Chinese localization of some editor elements are not correct. They mentioned that there are some words that are used that may be an appropriate replacement in some situa ...
Replicated Timelines Update runs once for Clients when you change its Play Rate
UE - Networking - Apr 22, 2022See linked UDN for more info. This looks to be because of how OnRep_Timeline handles any changes to the component's FTimeline struct. If the timeline isn't playing, OnRep_Timeline will call SetPlayb ...
Structures get broken after saving and reopening project
UE - Gameplay - Nov 12, 2018When a project is reopened that contains structures, they will be corrupted with a hash code instead of their original values. If the "Break Struct" node is removed it can't be re added as it is not ...
STAT_AI_BehaviorTree_InstanceMemory is sometimes wildly inaccurate
UE - AI - Jun 10, 2020From the UDN thread: Turns out this is caused by the way this stat was implemented for the FBehaviorTreeInstance struct: 1) You call IncMemoryStats on construct, before the struct is populated with ...