PIE Exits and Error Appears When Attempting to Travel to New Map

UE - Gameplay - Aug 19, 2016

When attempting to use an overlap event followed by an open level node, PIE will exit and errors will appear in the message log. ...

Persistent Local Booleans do not serialize with CPF_SaveGame

UE - Gameplay - Blueprint Runtime - Nov 30, 2020

A persistent local boolean will not serialize even though it is marked with CPF_SaveGame, when other types will (such as an integer).  [Image Removed] [Image Removed] ...

Web browser widgets prevent projects from packaging

UE - Foundation - Cpp Tools - Automation Tool - Jul 29, 2015

When a project incorporates a web browser widget it will cause the project to fail during packaging and or launch on. The launch will fail and produce an error (provided below). ...

TrackFieldData and SubSectionFieldData structs not properly being serialized during cook in the Precompiled Evaluation Template

UE - Anim - Sequencer - May 3, 2019

During compile on the fly if the evaluation field is invalidated SubSectionField data will not have been properly serialized and the meta data will not be populated correctly, as the custom serializ ...

Declaring a TMap as a UPROPERTY fails to compile with a boolean

UE - Foundation - Core - Dec 16, 2015

Declaring a TMap< [type], bool> will fail to compile if it is declared as a UPROPERTY. The error seems to be with the bool because TMap< [type], int8> will compile as a UPROPERTY. ...

ListView crashes when GlobalInvalidation is enabled.

UE - Editor - UI Systems - Slate - Jan 11, 2022

Reverting to the fix in [Link Removed] (CL#17788567) will avoid the crash. ...

Setting character animation in parent BP and mesh in child BP does not play the animation in a packaged game

UE - Gameplay - Jan 21, 2015

When a child BP is used to with a skeletal mesh to play an animation set in the parent, the animation will play in editor and in standalone but will not play in a packaged game. ...

Spin box does not receive input in mobile preview

UE - Editor - UI Systems - Sep 9, 2015

When using a spin box in mobile preview, the spin box does not appear to update. It will highlight when the mouse is over it but clicking and dragging will yield no value changes. ...

List view reorders itself as it is scrolled through.

UE - Editor - UI Systems - Feb 26, 2019

The widgets in a list view widget will appear to reorder themselves as they are scrolled through. ...

Conflicting FName for components freezes the editor with no warning

UE - Foundation - Core - Jun 24, 2015

If two code components have the same TEXT("") name in the CreateDefaultSubobject call the code will compile correctly but the editor will freeze when adding an instance of the class or classBP to th ...