Unreal Engine Issues
Unreal Engine Issues
Editor will crash on attempt to load a previously-saved Blueprint asset with a serialized default subobject containing a serialized static array of two or more nested subobject instances.
A crash will result if a Blueprint class that's based on a native C++ class containing two or more nested, explicitly-instanced subobjects referenced by a fixed-size object array property are serial ...
r.MobileContentScaleFactor appears to be ignored defaulting to 1 on Mobile Devices
UE - Platform - Mobile - Feb 28, 2022r.MobileContentScaleFactor = 0 should return Native Resolution; 1 should return Standard definiton; 2 shold return an High Definition Resolution. It seems that r.MobileContentScaleFactor is being i ...
Editor-only blueprints like WidgetBlueprint are not added to cooked asset registry class hierarchy
UE - CoreTech - Aug 10, 2022Both the Asset Registry and Asset Manager look for all subclasses of UBlueprintCore and use that to search for blueprint classes and construct an inheritance hierarchy. This always works in editor b ...
Find in Blueprints: Default values in struct members are not returned
UE - Framework - Blueprint Editor - Apr 30, 2025Context Find-in-Blueprints can be used to search the current, or all, blueprints. If you enter a simple string, it would return nodes, pins, pin default values and default values for BP Variables ( ...
[Feature Request] Add a "Move Function Declaration to Parent" option for blueprint added functions
UE - Gameplay - Blueprint Editor - Mar 21, 2021Users requested the ability to move only the function declaration to a base class from blueprints instead all of the nodes inside the function. From the user: "Essentially, 95% of the time wha ...
Blueprint Array/Map properties with DefaultToInstanced types are not instanced properly
UE - Gameplay - Blueprint - May 6, 2019At a licensee, I discovered a problem where Blueprint-created array and map properties are not correctly propagating the ContainsInstancedReferenced property flag. This means that if you create a Ma ...
Non-Uniform Mobile Content Scale Values Render Black Screen when Launching to Mobile Device
UE - Platform - Mobile - Mar 3, 2015When attempting to set the configuration for mobile devices within the Engine/Config/DefaultDeviceProfiles.ini, any value that is non-uniform like 1.2 or 1.6 will render a black screen after deployi ...
Compiling with VS2019 16.6 later causes garbled characters in output window
UE - Foundation - Cpp Tools - UnrealBuildTool - Nov 10, 2020Using old behavior by applying true to NMakeUseOemCodePage property solves this issue. in VCProject.cs// Project globals (project GUID, project type, SCC bindings, etc) { VCProjectFi ...
Fix delegate problems with Blueprints
UE - Foundation - Core - Feb 18, 2015https://udn.unrealengine.com/questions/236428/bug-blueprints-executing-zombie-code.html Blueprint MyCharacter is based on native class CodeFirstPersonCharacter. CodeFirstPersonCharacter has compone ...
Changing root component in C++ does not apply correctly to map placed actor instances
UE - Gameplay - Jan 4, 2023Edit: Please investigate for not only root component changes, but native component hierarchy changes in general and whether those hierarchy changes apply to actor instances saved as part of maps. O ...