Unreal Engine Issues
Unreal Engine Issues
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 ...
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] ...
Shapes create with generic 'StaticMeshActor' ID instead of using their name like in previous releases
UE - Foundation - Dec 2, 2021This is a regression. In 4.27 basic shapes created from the place actor panel are named after their respective shapes making it easier to to discern. In 5.0ea this is no longer the case. ...
[Interchange][FBX] Import of custom collision add the collision mesh material slot to the mesh material slot
UE - Editor - Content Pipeline - Import and Export - Jan 20, 2025cf part 2 of that UDN https://udn.unrealengine.com/s/question/0D5QP00000rP4CG0A0/interchange-custom-collision-changes-from-fbx-pipeline?fromCase=1 ...
Unable to write custom stencil using Draw Material To Render Target
UE - Rendering Architecture - Materials - May 20, 2022The attached project was created in 4.27 and is rendered on render target when checked in 4.27. However, this does not reproduce in 5.0 or later. ...
Infinite loop error message does not help and spawns too many messages
UE - Gameplay - Blueprint - Dec 17, 2014The infinite loop reporter is reporting every infinite loop by popping up a window for each problem loop. So if you have an actor with 3 loops that trigger the infinite loop error and then you have ...
Crash on PIE with varying number of players
UE - Networking - Jan 26, 2015User crashes on PIE when number of players is set to two in the "Play" drop down menu. No crash if number of players are set to 1,3, or 4. Additionally, setting the "Dedicated server" checkbox to ...
Hierarchical Instanced Static Mesh component instances are not duplicated correctly if the parent is duplicated
UE - Graphics Features - Dec 16, 2016Duplicating an actor with a Hierarchical Instanced Static Mesh component that has an instance will duplicate the instance as well, but this instance is not rendered. Please note, this was discovere ...