Unreal Engine Issues
Unreal Engine Issues
Poor performance when Player Collision view mode active in City Sample
UE - Simulation - Core - Apr 2, 2024The Editor become unresponsive and then has very low frame rates after activating the Player Collision view mode in the Small_City_LVL and Large_City_LVL maps in the CitySample project. The curre ...
Possible crash reimporting destructible assets
UE - Simulation - Physics - Destruction - Jan 20, 2017This won't always happen, but the call in ImportDestructibleMeshFromApexDestructibleAsset to LODModel.ReleaseResources(); will enqueue render commands to release the resource, but the call after tha ...
Unable to import animation data from fbx with bone names starting with a number
UE - Anim - Rigging - Control Rig - Jul 31, 2023When importing animations with numeric names from fbx in UE5.2 or later, the AnimationSequence asset is created but the animation data is not imported. The workaround is to not prefix bones with num ...
The default Direct Link texture path is no longer set in Twinotion settings
TM - Interoperability - Jun 27, 2024Default path for DL is not correctly set and should be set to the following: C:\Users%USERNAME%\Documents\Twinmotion2024.1\DirectLinkTextures See attached screen-shot ...
Blueprints with inherited Macros cannot save
UE - Gameplay - Blueprint - Feb 27, 2015Blueprints with inherited Macros cannot save. Reproduced in 4.7.1 binary and Main (//depot/UE4/Promotable-CL-2455917) ...
Long load time for files with large numbers of trees in 2025.2
TM - Core - Oct 6, 2025Reported in SF [Link Removed] User reports that multiple files with large amounts of trees take substantially longer to load in TM 2025.2 compared to 2025.1.1. Confirmed with one of the user's fil ...
OnClick Events for buttons in 3D Widgets not firing in Multiplayer
UE - Editor - UI Systems - Mar 6, 2017OnClick Events for buttons in 3D Widgets not firing in Multiplayer. This issue only affects the button component as other Widget components that used the Left mouse button function as expected Regr ...
Interaction between sublevels and LevelSequences can break actors attachments hierarchy of the sublevel.
UE - World Creation - Worldbuilding Tools - Aug 6, 2025Having a LevelSequence opened and unhiding a sublevel can break the attachment hierarchy of the actors that are inside the sublevel. This also affects to the sublevel asset itself. ...
If using High Quality Gaussian DoF on Mobile, the whole screen is always blurred
UE - Platform - Mobile - Jun 17, 2020When High Quality Gaussian DoF on Mobile is enabled, the entire screen is always blurred. I confirmed that it works properly in 4.24. Also, I confirmed that adding the modified CL of [Link Remove ...
Max loop iteration threshold not being reached before infinite loop is triggered
UE - Gameplay - Blueprint - Aug 29, 2019Infinite loop is called when the loop is implemented by only one, one time. When the set up should not flag anything until iteration 1,000,000. [Link Removed] [Link Removed] ...