Unreal Engine Issues
Unreal Engine Issues
check(!bPostTickComponentUpdate) fails triggered by ~FStaticMeshComponentBulkReregisterContext() and FD3D12DynamicRHI::ProcessInterruptQueueUntil()
UE - Gameplay - Components - Jul 23, 2024Context: Some ActorComponents can schedule end-of-frame work which UWorld executes later in the frame in UWorld::SendAllEndOfFrameUpdates(). By-design it appears that it's not allowed to schedule mo ...
Selection outline not visible when actor is selected on certain AMD GPUs
UE - Graphics Features - Apr 18, 2017When selecting an actor in the viewport, some AMD GPU users are reporting that the selection outline is not visible. Rolling drivers back to 17.1.1 correct the behavior.| Two EngineQA tester have ...
Toggling visibility of Sublevels on a server can cause a disconnect if Dynamic Actors exist in the sublevels.
UE - Networking - Aug 17, 2018The PackageMap / NetGuidCache appear to get into a bad state on Clients if the Server toggles level visibility of a sublevel. This can affect currently connected clients, as well as clients that jo ...
ACineCameraAttachMount's "Target Actor" constraint does not work with Spawnables or Replaceables in Sequencer
UE - CAPT - 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 ...
Sequencer causes 3DWidget on BP vectors to snap to Actor when active
zComponent - Archive - Nov 15, 2025When we have Vectors in BP with Show 3D Widget enabled, the Transform Widget would always snap back to the Actor after we move the 3D Widget in-world. [Link Removed] Removing the _DaySequenceActor ...
Spherecast against complex geometry is returning odd results
UE - Runtime - Simulation - Sep 19, 2023Turning on batching of sphere casts when colliding against complex gives incorrect results. Affects debug output and vehicle wheels and body movement. The issue is with the batch query mode which ...
Hierarchical Instance Static Mesh's array does not reorder itself correctly
UE - Graphics Features - Jan 16, 2017When an instance is removed from a Hierarchical Instanced Static Mesh's array, if there are indices that are further along in the array that fill that index, the last index in the array is used to d ...
Tick functions are skipped on the first frame in package build and standalone PIE
UE - Gameplay - May 19, 2025It's reported that all Tick functions are skipped on the first frame when running in packaged builds and standalone PIE. This is because both TickVisitedGFrameCounter and GFrameCounter are initializ ...
Starter Content's "P_Explosion" does not successfully convert to a Niagara System - incorrect loop, spawn, sprite size, and collision behaviors
UE - Niagara - Mar 17, 2022Starter Content's "P_Explosion" does not successfully convert to a Niagara System - incorrect loop, spawn, sprite size, and collision behaviors Changes needed for / issues found with each emitter:A ...
Physics Constraints do not have the same values if they are part of an 'Always Loaded' level
UE - Gameplay - Dec 3, 2014Physics Constraints do not have the same values if they are part of an 'Always Loaded' level. They will work correctly in the Persistent level and a level that is Streamed in. This becomes problem ...