Unreal Engine Issues
Unreal Engine Issues
Light Function and World Position in 5.4
UE - Graphics Features - Nov 4, 2024When rendering a Light Function into the Translucency Lighting Volume, the World Position Material Expression returns the position relative to the Camera (unrotated), not the World. This can be mor ...
Changes to Instanced Properties default value on BP not propagated to placed actors in the opened level
UE - Foundation - May 15, 2025In UE versions 5.4 and onwards (as of CL 42589677 in Main), when an Instanced UObject property is defined in an Actor Blueprint, modifying the default value in the Blueprint does not propagate the c ...
Camera Switcher Import option not functioning properly
UE - Anim - Sequencer - Oct 22, 2019In UE 4.20 we got a feature that let you import a FBX file that contains cameras with a camereaswitcher to create a "camera cut track" within sequencer. From the release notes of 4.20: https://docs ...
Possessing and Unpossessing a Pawn when using NetCulling causes the Client to lock up
UE - Networking - Aug 1, 2019In this test bench, they are using a APawn with a custom replicated Movement Component rather than using a ACharacter and they are getting a different result that ends up in a permanent softlock of ...
Strange intermittent CCD behavior on constrained physics bodies
UE - Simulation - Physics - Oct 23, 2019There is some strange issue with CCD where constrained CCD objects can get velocity nulled when hitting things while constrained, its very hard to reproduce normally in engine but happens often in V ...
Editor hits Asserts when trying to use debug rendering such as ShowFlag.LODColoration
UE - Rendering Architecture - RHI - Sep 22, 2020The assert in BasePassRendering.cpp:693 fires, crashing to desktop when using this console command in the editor, in PIE, and closes out the window when playing in Standalone. Does not crash when us ...
Packaging to HTML5 fails when Online Framework is enabled
UE - Online - Nov 17, 2018Packaging a project to HTML5 while Online Framework is enabled seems to cause packaging failures. It produces the following errors from the Output Log: PackagingResults: Error: unresolved symbol: ...
Staging Directory in Project Packaging Settings should not be saved as absolute path
UE - Foundation - Data Pipeline - Cooker - Jun 8, 2021When you package a project via the editor, it updates the ProjectPackagingSettings to set the StagingDirectory to the specific one chosen by the user. However, it saves this path as an absolute path ...
Crash Clicking on Enum in BT Decorators After the Enum Has Been Altered
UE - AI - Apr 5, 2017Clicking on a Behavior Tree decorator that references an Enum blackboard key will crash the editor if that Enum has been altered in the method described in the repro steps. If you set decorators to ...
LevelSequenceActorSpawner::GetLevelStreaming() fails to compare sub level names when running in Pie
UE - Anim - Sequencer - Sep 26, 2019The problem is in the function with signature "ULevelStreaming* GetLevelStreaming(FString SafeLevelName, UWorld& World)" within LevelSequenceActorSpawner.cpp at line 30. The problem is with the Safe ...