Unreal Engine Issues
Unreal Engine Issues
Drag in event graph does not work after touch event with breakpoint
UE - Editor - UI Systems - Slate - May 3, 2017Dragging in event graph does not work after touch event with a breakpoint. This issue persists after the PIE has stopped as well. But the issue is resolved when the project is reopened. Regression: ...
Slider component does not accurately update value if thumb image is large
UE - Editor - UI Systems - May 26, 2017Slider component does not accurately update the value if thumb image is large in size. The issue is that when a value range on the slider is clicked the thumb should match the associated value; howe ...
Gameplay Tag Redirectors are not updating properly with nodes
UE - Gameplay - Blueprint - Jul 27, 2017Gameplay Tag Re-directories are not updating properly with nodes. Specific nodes include: "Make literal gameplay tag" and Switch on gameplay tag. Versions Tested: 4.15.3 - CL: 3450819 4.16.2 - CL: ...
Adding a Blueprint Interface (with function named "Test") to a Widget Blueprint with a variable named "Test" crashes the editor when compiling
UE - Gameplay - Blueprint Editor - Oct 5, 2017Giving the Blueprint Interface Function and the Widget Blueprint Variable the same name, then adding the Blueprint Interface to the Widget Blueprint, causes the editor to immediately crash when comp ...
StateTree: While editing State Parameters or exposed properties of a Condition/Task, an ensure() fires when editing inputs of a Property Function bound to an array element
UE - AI - StateTree - Mar 5, 2026Consider an array property that can be edited in the StateTree editor. This can be a State Parameter or an exposed property of a Condition or Task, for example. Each element of the array can be boun ...
Blueprint fails to compile after adding local map variable element
UE - Gameplay - Blueprint - Oct 11, 2017When a map is added as a local variable for a blueprint function, the blueprint will failt o compile. Regression: No, same behavior occurs in 4.16.3 Workaround: Setting the key/value pair to int/i ...
Sine Wave audio plays choppy in editor
UE - Audio - Dec 4, 2017Playing a sine wave as an audio sample in the editor produces a choppy sound when it does not outside of the editor. This issue does not appear to be a regression. Versions Tested: Issue occurs in ...
Incorrect config property serialization for UStructs used as TMap keys or contained in a TSet with a single value. Diffs taken from default-value of each member type, instead of from default-value of the struct
UE - CoreTech - Nov 18, 2024Consider a UStruct with some basic type members, each one with a default value specified in the struct. Also consider a TSet or TMap with that struct as keys, used inside a UObject as a UProperty an ...
Package fails to load due to EditorOnly data when launched onto Mac or Windows
UE - Foundation - Core - Jun 28, 2017LogPlayLevel: QAGame: [2017.06.28-14.09.14:706][ 0]LogLinker:Warning: Unable to load package (../../../QAGame/Content/UMG/UMG_Sprite.uasset). Package contains EditorOnly data which is not supported b ...
Code based FPostProcessSettings variables are not displayed properly in the editor
Tools - Sep 6, 2017When a variable of FPostProcessSettings is created, the variable itself is missing in editor with the actual post process settings fully expanded instead. Additionally, the fully expanded settings ...