Unreal Engine Issues
Unreal Engine Issues
Crash when double-clicking landscape editor splines point tangent
UE - Graphics Tools - Terrain - Landscape - Apr 11, 2023When double click splines point tangent, the editor will crash. This issue related to [Link Removed], it didn't care about double-click case. Workaround: void FEditorViewportClient::ProcessDoubl ...
TOptional value changes in parent BP don't propagate to loaded child BPs
UE - Framework - Blueprint Editor - Oct 27, 2025Context TOptional<T> is a wrapping struct around a type, that lets the property have an set and unset state, in addition to the property's value when set. It is editor exposed: designers can open b ...
[Feature Request] Improve FExtensibilityManager to afford better specialization of context types
Tools - Oct 11, 2016Currently FExtensibilityManager assumes that all extensibility is going to operate on TArray<UObject*>. Moving forward, we want to be able to supply custom, domain-specific context information to e ...
ARKit GetCurrentFrame crashes app
UE - Platform - XR - Aug 22, 2018Using "GetCurrentFrame" crashes app. "The crash is due to the default constructor of FAppleARKitFrame being called by the above mentioned blueprint function. That constructor fails to initialize fi ...
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 ...
When the Initial Position of an Animation Asset is entered outside the expected range, the animation gets stucked and does not refresh.
UE - Anim - Runtime - Mar 18, 2024The animation gets "corrupted" when the Initial Position value has an invaildad value. In this case, this means that the Initial Position value is outside the range of the duration of the Animation. ...
Changing case of characters in certain fields does not save the change
Tools - Nov 26, 2018Capitalization of Struct variable names, Blackboard key names, Enumeration names and other various fields cannot be changed without changing other parts of the variable to completely change it. Simp ...
DataTable::LoadStructData allocating wrong size
UE - Foundation - Core - Oct 5, 2016Pointed out by a licensee here: UDataTableを読みこんだ際のメモリ破壊について When reading the `UDataTable, in DataTable::LoadStructData()` the contents of the struct are interpreted[Image Removed], but the size of ...
Searching for gameplay tag variable values in the blueprint details panel returns no results
UE - Framework - Blueprint Editor - Feb 25, 2025The expected behavior is when searching for a gameplay tag value in the blueprint details panel, you will find the matching gameplay tag you are searching for. The actual behavior is when searching ...
Level Sequence Actor- bTickWhenPaused is unsettable from the details view
UE - Anim - Sequencer - Aug 1, 2024See UDN here: https://udn.unrealengine.com/0D5QP00000TtFaV0AV?fromCase=1 The issue is that in FMovieSceneSequencePlaybackSettings, the TickInterval struct is marked with an EditCondition to only be ...