Unreal Engine Issues
Unreal Engine Issues
AddForce behaves inconsistently between PIE and Standalone Game / Build
UE - Simulation - Physics - Apr 23, 2020This example consists of a simple BP Actor, containing a Collision Sphere and Static Mesh (Sphere). The BP has Simulate Physics Ticked on, the Mass in KG is 1 and collision preset is set to Block Al ...
TSparseArray NatVis visualizer doesn't work for arrays that use TInlineSparseArrayAllocator
UE - Foundation - Cpp Tools - Nov 6, 2025The NatVis visualizer allows many custom Unreal types to be displayed in a helpful manner inside the Visual Studio watch window. One such type is TSparseArray. Under normal circumstances, visualizin ...
Bone names of ~100 characters or longer crash the editor when baking to control rig
UE - Anim - Rigging - Control Rig - May 15, 2025This is an issue with inconsistencies over rig names and how control names are generated. We expect that a control name will be appended with _CONTROL or _CURVE_CONTROL. But because URigHierarchy: ...
Cannot create Editor Toolbar Button with the name "Button"
Tools - Apr 19, 2017The plugin fails to be created with the name "Button". The name button or BUTTON works as a plugin name. If there are some names that plugins cannot be called, then an error/warning message in the o ...
Unreal Remote 2 does not send information about motion control
UE - Platform - Mobile - Aug 25, 2018Unreal Remote 2 does not give information on motion control to PC. This is different from the description of the application. Use this application alongside Unreal Engine to view and control the de ...
Possession is not replicated properly to some clients
UE - Networking - Nov 8, 2018A user has reported an issue where Possession replication or Character Movement replication, unsure of which, is not working properly for some clients. It seems to work fine for the first client but ...
NormalizePackageNames() should interpret 'exclude developer folders' to also exclude packages in ExternalActors and ExternalObjects
UE - CoreTech - Oct 14, 2022In NormalizePackageNames() (PackageUtilities.cpp), there is a PackageFilter parameter, which can be set to exclude developer packages (NORMALIZE_ExcludeDeveloperPackages). The code only checks the b ...
Crash when removing cloth apb's assigned to asset
UE - Simulation - Physics - Character - Apr 27, 2016When removing already assigned cloth asset from a skeletal mesh it will crash the editor. I was able to reproduce this with the Owen asset from Content Examples, but was unable to get it to work fro ...
Subsurface Profile Materials That Are Illuminated By Particle Lights Render White
UE - Graphics Features - Feb 9, 2017Due to the changes made to subsurface profile (implementation of full resolution skin shading) it now renders white or with heavily faded base colors under certain conditions. In this case it is wh ...
Check() crash in merge tool when using SVN
UE - Gameplay - Blueprint Editor - Oct 21, 2015A UDN user found a crash in the merge tool when using SVN. https://udn.unrealengine.com/questions/265740/crashbug-with-svn-merging.html The failing check() crash occurs in LoadBaseRev (Merge.cpp): ...