Unreal Engine Issues
Unreal Engine Issues
ACineCameraAttachMount's "Target Actor" constraint does not work with Spawnables or Replaceables in Sequencer
UE - Virtual Production - Tools - Virtual Camera - Aug 12, 2025Constraints (UTickableConstraint) are usually created throuh the "Animation" tab available in the Editor's "Animation Mode". When created through that interface while Sequencer is open, the internal ...
Components derived from scene component reset vector location upon closing and re-opening editor
UE - Gameplay - Blueprint - Jun 7, 2016Components derived from scene component reset vector location upon closing and re-opening editor. This does not happen to scene components or other child components within a blueprint. Regression ...
[CrashReport] UE4Editor_Landscape!ULandscapeInfo::UpdateLayerInfoMap() [landscape.cpp:1459]
UE - LD & Modeling - Terrain - Landscape - Aug 22, 2017This is an intermittent crash occurring in the 4.17 release. Users have not provided any descriptions of their actions when the crashes occur. Source Context 1444 LayerSettings.bVa ...
Network profiler crash
UE - Networking - Aug 6, 2020Running with the -networkprofiler command line argument can crash the server on the first engine tick in FNetworkProfiler::TrackFrameBegin because the file writer archive hasn't been created yet. ...
NavLinkCustomComponent fail to register if loaded with the level
UE - AI - May 29, 2015NavLinks are failing to work due to UNavLinkCustomComponent::OnRegister being called before the creation of the UNavigationSystem. This results in the NavLinkUserID remaining 0 and the link never tr ...
"Snap to Target, Keep World Scale" when attaching doesn't work properly if parent is scaled.
UE - Gameplay - Nov 11, 2015See UDN thread, which includes suggested fix. https://udn.unrealengine.com/questions/267677/attachactortocomponent-scale-issue-with-scaled-com.html ...
Crash Occurs While Slicing Procedural Mesh Component
UE - Gameplay - Sep 19, 2016A crash is occurring when attempting to slice a procedural mesh that has the Create Other Half option enabled. Found in 4.13.0. Reproduced in Main CL 312 ...
Set Relative Location on components does not replicate to clients
UE - Networking - Sep 2, 2015Set Relative Location on components does not replicate to clients. Reproduced in 4.8.3 binary, 4.9.0 binary, and Main (CL 2676715) ...
Input breaks after spawning character from template
UE - Gameplay - Input - Jun 14, 2017When a character is spawned from a template of an existing character instance, the existing instance loses the ability to read any input. This was discovered when testing the crash fix for [Link Re ...
Font advance and fallback font metrics have issues in 4.16
UE - Editor - UI Systems - Slate - Jun 5, 2017There were some font regressions in 4.16 that we've since fixed (CL# 3456916 and CL# 3425681). These are affecting live users so we should get them into the next 4.16 build. ...