Unreal Engine Issues
Unreal Engine Issues
Crash when toggling the SmartLinkEnabled state of a NavLinkProxy specifically in a packaged game targeting Debug/Development
UE - AI - Navigation - Jan 24, 2025The licensee has reported, and I was able to reproduce, that specifically in package builds targeting Development configuration, trying to toggle the SmartLinkEnabled state of a NavLinkProxy will cr ...
Crash when unloading Lighting Scenario Streaming Level
UE - Graphics Features - Nov 16, 2016If a sub-level is set as a Lighting Scenario in the Levels tab, calling Unload Stream Level will cause standalone / packaged games to crash. Regression: No - Lighting Scenario not available before ...
[CrashReport] Linux crash - /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so()
UE - Platform - Linux - Nov 16, 2017This is a new Linux crash in 4.18.1. There are a few similar but different callstacks that reference dri/radeonsi_dri.so() I've attached a log, but none of the ones I've looked at appear to contai ...
Crash when calling "Is List Item Expanded" For an Item in a list view
UE - Editor - UI Systems - Apr 18, 2019When calling the function "Is List Item Expanded" on an object in a list view the editor will crash ...
Assertion failed occurs in VR when walking into water on QA-Waterworks map
UE - Graphics Features - Jan 20, 2021Encountered a crash when testing shadows in QA-Waterworks map. I found an issue when walking into the water at the bottom for Example 2A, where it would crash upon entering the water. See screenshot ...
GeometryCollectionPhysicsProxy::FieldParameterUpdateCallback() not removing invalid Commands, leading to performance issues
UE - Simulation - Visual - Aug 30, 2025GeometryCollectionPhysicsProxy::FieldParameterUpdateCallback() not removing invalid Commands, leading to performance issues. The licensee has provided their analysis: We seem to have stumbled acro ...
Niagara Crash After Adding More Than 20 Emitters to a System
UE - Niagara - May 24, 2019The Editor will crash after adding more than 20 Emitters to a system. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 6574378, 4.23 CL# 6599617 ...
Client crashes when executing seamless travel with an active particle system in the level that was spawned at runtime
UE - Niagara - Apr 16, 2019Clients crash when being part of a Seamless Travel if there was an active particle system in the level that was spawned at runtime. If the travel is not seamless, the particle system is placed in th ...
Crash when incorrectly calling the parent constructor
UE - Foundation - Core - Mar 23, 2016Crash when incorrectly calling the parent constructor ...
Launching any QAGame map on Linux with an NVIDIA Card crashes at launch
UE - Graphics Features - Mar 11, 2022Workaround: "Start with "-windowed" in your command line until the issue is resolve" Engine does not crash. However, a crash appears when the game is launched in the output log. Issue is occurring ...