Unreal Engine Issues
Unreal Engine Issues
Construction script does not properly reset array count
UE - Gameplay - Oct 28, 2019It appears that in UE 4.23, some specific arrays in construction scripts are no longer cleared automatically and retain references to TRASH objects from the previous construction script calls. This ...
Crash occurs when renaming an asset that is used by Class Default Object
UE - CoreTech - UObject - Nov 23, 2021Not a regression. Tested in: //UE4/Release-4.26.2 CL15973114 Binary - Reproduced //UE4/Release-4.27.1 CL17735300 Binary - Reproduced //UE5/Release-5.0-EarlyAccess CL16682836 Binary - Reproduced Fro ...
Crash when spawning destructible objects in 2 player PIE
UE - Simulation - Physics - Destruction - Aug 31, 2016Crash Reporter link: [Link Removed] With Source Context: [Link Removed] ...
Duplicated TextureLoadVirtualPageTable in GetCustomData functions in generated HLSL add to the total instruction count due to TextureLoad having side effects
UE - Rendering Architecture - Materials - Dec 4, 2024When using materials with CustomData inputs, such as the Eye material with Iris Distance and Mask, Virtual Texture samples will increase the instruction count for each unique VTPageResult. Each cus ...
UE4Editor does not start when there are no audio devices available
UE - Platform - Linux - Sep 26, 2018UE4Editor does not open when there are no audio input or output devices available. The editor hangs at 83% after it initializes the AudioMixer. This issue looks like it was caused by CL 4396954. Et ...
Mouse cursor will not change unless a mouse button is being held down.
Tools - Dec 5, 2014Changing the mouse cursor depending on what it is currently over only happens if a mouse button is also being held down. This worked normally in version 4.5.1 WORKAROUND: In UGameViewportClient::Ge ...
Mouse cursor does not disappear when widget has focus
UE - Editor - UI Systems - Nov 20, 2017THere is an issue with the Mouse cursor when using UMG with the set show mouse cursor option. after setting the set show mouse cursor off pressing a widget and giving it focus causes the mouse curso ...
Blueprint Function Reorder displays error tooltip when trying to reorder functions
UE - Gameplay - Blueprint Editor - Dec 7, 2017There is an issue when attempting to reorder blueprints where Blueprint Function Reorder displays error tooltip when trying to reorder functions. In previous engine versions, functions could not be ...
Networked root motion montage with rotation fighting smoothing
UE - Gameplay - Player Movement - Oct 30, 2023A licensee is reporting a sim proxy is playing a networked anim montage with root motion, that the rotation changes will fight between what's produced in ::SimulateRootMotion and ::SmoothClientPosit ...
Wolrd Partition Foliage Builder - Fails to build with multiple external actor folders.
UE - World Creation - Worldbuilding Tools - World Partition - Apr 1, 2025Hello, We are building a world with world partition & a lot of nanite foliage. We want to modify out Foliage Instance grid size via the commandlet. [Link Removed] Even in a new empty level the c ...