Unreal Engine Issues
Unreal Engine Issues
AI Perception Not Showing Up in Debugger
UE - AI - May 20, 2016AI Perception does not seem to be showing up in the debugger. The same setup functioned as expected in 4.11.2 binary, but upon converting the project to 4.12 Preview 4 binary, no debug information w ...
SteamSockets not setup to handle Client/Session ID handshakes
UE - Online - Jan 13, 2023Repro Rate: 3/3 This is a live issue where the customer claims that the SteamSockets implementaton is not setup to handle the new Client and Session Id setup that was introduced in 5.1. This issue ...
Landscapes cause Vulkan crash related to GRHISupportsAttachmentVariableRateShading
UE - Rendering - Architecture - RHI - Nov 7, 2022Binary (Installed Build)//UE5/Release-5.1 @CL22986940 I encountered this same crash when creating a landscape twice, but was not able to consistently reproduce it with those steps. I figured out th ...
Atmospheric Fog actor creates a black ring on the horizon
UE - Graphics Features - May 16, 2016When using the Atmospheric Fog actor, a black ring can be seen on the horizon. This can be seen by simply placing the Atmospheric Fog into an empty level. The issue cannot be seen if there is a sky ...
Reroute nodes break Cached Poses in AnimBPs
OLD - Anim - Sep 2, 2016Reroute nodes break Cached Poses in Animation Blueprints Regression: This does not occur in 4.12 ...
AI in sublevel calling actors in persistent level crash editor when sublevel is not visible
UE - AI - Aug 11, 2016If an AI is moving between points in the persistent level but is located within a sublevel and the sublevel is set to not visible, there is a chance that the editor will eventually crash. Setting Is ...
Packed level blueprint does not behave as noted in documentation.
UE - World Creation - Worldbuilding Tools - Nov 28, 2022In the documentation page: [Level Instancing in Unreal Engine | Unreal Engine 5.0 Documentation|https://docs.unrealengine.com/5.0/en-US/level-instancing-in-unreal-engine/] it is mentioned that: [ ...
Raytraced lights with Source Length > 0 behave incorrectly with Megalights
UE - Graphics Features - Ray Tracing - Mar 26, 2025When Megalights is enabled, light can leak into areas that should be occluded for lights with smallish (5.0) source length and source size. [Image Removed][Image Removed] This was taken with r.Ray ...
Media Playback - PNG Image Sequence Crashes Editor
UE - Media Framework - Sep 14, 2023The attached 105 frame PNG image sequence ( 1920x1080 w/alpha ) crashes the editor in UE 5.3 and 5.4 when played in the media player or in a MediaPlate. The same image sequence does not crash the ...
HTML does not properly show mouse with Set show mouse cursor node
UE - Platform - Mobile - Jun 15, 2017When playing a project on HTML 5, the node "Set show mouse cursor" does not appear when the node is used. ...