Unreal Engine Issues

ALT-Drag a non-DBuffer Decal will Crash the Engine

When you ALT-Drag a Decal that is not using the Dbuffer settings, the Engine will crash. The issue is not reproducible in Main Promotable-CL-2581018 This is a regression. Worked in 4.7.6, broken ...

Crash when unloading Lighting Scenario Streaming Level

If 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()

This 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 ...

SubwaySequencer crashes when launched in Standalone Game

SubwaySequencer is crashing when launching in standalone game Reported here originally:シーケンスの再生に関して ...

Crash when spawning actor with no viewport initialized

If an attempt to spawn an actor is made before the Level Editor Viewport is fully initialized (i.e. before it has had a chance to get rendered at least once), and that actor has no specific Factory ...

Crash when calling "Is List Item Expanded" For an Item in a list view

When 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

Encountered 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 ...

Niagara Crash After Adding More Than 20 Emitters to a System

The 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 ...

Crash on Galaxy S7 devices with Mali GPU (SM-G930F / SM-G935F)

Client crashes when executing seamless travel with an active particle system in the level that was spawned at runtime

Clients 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 ...