Unreal Engine Issues
Unreal Engine Issues
SimpleMoveTo does not work on Clients
UE - Networking - Jan 9, 2015SimpleMoveTo does not work on Clients. ...
"Runaway loop detected" warnings on AnimBP with worker threads
OLD - Anim - Jul 29, 2016The runaway loop detection stuff is designed as per thread singletons (TLS). The worker threads don't properly reset the runaway counters. ...
HISMC with LODs added as a Blueprint Component creates extra Material Elements
UE - Graphics Features - Oct 18, 2016Adding a HISM as a component within blueprints and referencing a Static Mesh with LODs, creates extra/additional and material elements. ...
Scrolling artifacts on mobile at low FPS
UE - Platform - Mobile - Aug 3, 2016Weird artifacts appear when scrolling through textures in a scroll box. This is more noticeable and happens more frequently at lower frame rates. View AnswerHub thread for examples of artifacting. ...
FRunnableThread Suspend doesn't work on android
UE - Foundation - Core - Aug 27, 2018The FRunnableThread::Suspend() function call does not work Android devices Tested in 4.19.2 (CL - 4033788), 4.20.2 (CL - 4302132), 4.21 (CL - 4313833) ...
Massive FPS drops in editor when moving mouse over menu items on Linux
UE - Platform - Linux - Apr 22, 2019Navigating various dropdown menus in the Editor causes the FPS to drop down to around 25 or 10 in the Viewport on an empty project. This does not reproduce on Windows with -vulkan This issues was ...
Japanese language indention issue when using Size to Content and Auto Wrap Text
UE - Editor - UI Systems - Feb 7, 2020PIE with single process starts multiple server windows
UE - Anim - Sequencer - May 26, 2020Playing in editor with single process starts multiple server windows. ...
iOS launch screen might briefly appear in Portrait before switching to Landscape
UE - Platform - Mac - Nov 13, 2023Sometimes on the first launch of the game after install, the launch image will be a cropped portrait drawn in landscape orientation, on the left side of the screen, with the top and bottom getting c ...
Ensure when calling server RPC from BeginPlay for a component that is not replicated by default
UE - Framework - Networking - Sep 18, 2025This seems to occur due to the order in which the component is registered and set to replicate in UActorComponent::OnCreatedFromReplication. The component is first registered with the world, which c ...