Unreal Engine Issues
Unreal Engine Issues
NvEnc API creation failed in 4.24.1 with M60 card on AWS EC2 instances.
PixelStreaming - Dec 24, 2019i had an AWS EC2 g3.4xlarge instance(Nvidia M60 card). I could run 4.22 packed PS application correctly. When switching to 4.24.1, I got the following error when trying to start the application wit ...
NavLinkProxy potentially causing extra Character Movement
UE - AI - Feb 12, 2020The user is using a Nav Mesh Bounds Volume and a Nav Link Proxy. They are calling AI Move To to navigate to the point, but the Character reproduces extra movement and goes a bit past it. For debuggi ...
Hot Reload Temporary dlls and pdbs Aren't Getting Cleaned Up Between Runs
UE - Foundation - Cpp Tools - Hot Reload - Dec 14, 2020I'm seeing it as an issue in at least 4.25.4, maybe prior. I'll update after checking 4.24. From the tests at my desk I could see that the HotReload.State file that DeleteTemporaryFiles (HotReloa ...
Crash when setting Retainerbox scale is set to 0 at runtime
UE - Editor - UI Systems - Jan 22, 2021Crash at runtime when Retainerbox scale is set to 0. The call stack indicates that the size of RenderTarget2D is set to 0. Attached repro project sets the scale of the RetainerBox that wraps the Im ...
Typo in NaniteRasterizer.usf preventing low tessellation mode at distance
UE - Graphics Features - Nanite - Nov 12, 2025A typo in a conditional compilation macro in NaniteRasterizer.usf causes code controlling distant tessellation reduction to never be included in final shader code. This means that the low tessellati ...
Walking into some destructibles crashes the editor
UE - Simulation - Physics - Destruction - Aug 20, 2015Submitted by a licensee on UDN. I verified it and have attached the test level that he provided. In the test map. some boxes fall and break. Walking straight into the boxes causes the editor to cra ...
[CrashReport] UE4Editor_CoreUObject!UPackage::Save() [savepackage.cpp:4597]
UE - Gameplay - Blueprint Compiler - Jul 14, 2017This is a common crash affecting users in 4.16. Users have not provided additional information. Source Context// Set the parent index, ifthis export represents a UStruct-derived object 4589 ...
Pick New sprite option becomes unavailable if you change the view options
Tools - Jan 4, 2018The Pick New sprite option becomes unavailable if you change the view options to either tile or column when working with the keyframes of a 2D animation. This issue affects the project indefinitely ...
Enabling Preview Rendering Level Mobile GLES3.1 on Map With Vector Fields Results in Editor Crash
UE - Platform - Mobile - May 21, 2018Reproduced Crash on 4.18.3, 4.19.2, and Main CL 4081612. Licensee states: Based on a quick inspection of the code, it seems FVectorFieldVisualizationVertexFactory::ShouldCache() returns false (req ...
Snap To Grid doesn't function in the Static Mesh Editor's Perspective View when moving Sockets
Tools - Jun 29, 2018When moving Sockets around in Orthographic View with Snap to Grid enabled, Sockets snap to the Position Grid Snap value when moved along the Grid. In Perspective View this is not the case and moving ...