Unreal Engine Issues
Unreal Engine Issues
IsTraceHandleValid with default FTraceHandles has unexpected behavior on the first frame
UE - Simulation - Physics - Sep 18, 2018Because both FWorldAsyncTraceState's CurrentFrame and FTraceHandle are default initialized to 0, on the first frame, if a new Asnc Trace starts all default FTraceHandles will reference the same (now ...
"Failed to find object 'Class None'" in project log after creation
UE - Foundation - Core - Nov 17, 2014Users reported seeing the line "LogUObjectGlobals:Warning: Failed to find object 'Class None.'" in the Output log after creating a project. I was able to confirm in a new blank code project without ...
Execution reroute nodes become wildcard reroute nodes when creating a second reroute node off the same execution pin
UE - Gameplay - Blueprint - Sep 21, 2015Execution reroute nodes become wildcard reroute nodes when creating a second reroute node off the same execution pin. Note: this does not appear to affect their functionality as execution reroute no ...
Rich text formatting is disabled on Linux
UE - Platform - Linux - Aug 1, 2016Rich text does not display on Linux. A Warning: Rich text formatting is disabled message appears where rich text would normally be displayed. I do not see this issue on Windows. REGRESSION: Yes Wo ...
Editing static functions in Blueprint Function Libraries with hotreload can cause saving issues with blueprints calling them
UE - Gameplay - Blueprint - Sep 26, 2016When editing a Static function from a Blueprint Function Library, any blueprints that have already had it added are unable to be saved. This can be worked around by removing the node and adding it a ...
Selecting an object while simulating will stop the objects physics
UE - Simulation - Physics - Aug 28, 2016Selecting an object that is simulating physics while the simulating will cause that object to stop simulating physics. Moving the object with the widget and releasing will cause the physics to begi ...
Lengthy Compile Times on Blueprints Containing an Array of Self References When Multiple Instances Exist in the Level
UE - Gameplay - Blueprint - Oct 11, 2016There are lengthy compile times with a blueprint with 50+ instances in the level that contains an array of self references. On lower-end machines, the compile times are upwards of 10 seconds. Found ...
Cannot Include VoiceInterface.h Without First Including OnlineSubsystem.h
UE - Networking - Nov 30, 2016Including VoiceInterface.h causes compiling to fail until you include OnlineSubsystem.h in the same file. This is not expected because VoiceInterface.h is part of the OnlineSubsystem module which ...
Vehicle wheels have no collision on HTML5
UE - Platform - Mobile - Dec 2, 2016A Wheeled Vehicle's wheels do not have collision when packaged into an HTML5 game. Regression?: Yes This issue did not occur in 4.13.2 Note: This is currently blocked from testing in Main as the P ...
MIDIDeviceController.h causes compilation errors when included in an external module
UE - Audio - Jan 16, 2017When you attempt to access MIDIDeviceController.h in your own project, it'll fail when you include it. This is the main error, while the other is a syntax error: missing type specifier - int assume ...