Unreal Engine Issues

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 ...

Renaming a Blueprint interface asset doesn't update the ImplementedInterfaces list in the Blueprint editor's Class Settings tab

There is no UI refresh for the Implemented Interfaces list in the Blueprint editor UI after a Blueprint Interface asset is renamed in the Content Drawer. Consequently, the interface cannot be remove ...

Copying struct value using Set node from null source crashes

Trying to access a Game Instance in a Blueprint's Construction Script results in a crash in 4.8 and 4.9. No crash occurred in 4.7.6 with the same Blueprint. This crash only seems to happen if the v ...

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 ...

Editor Crash When DFAO Viewport Has Zero Area

I've reproduced this crash in 4.16, 4.17, 4.18, 4.19, and Main. Per licensee: The editor crashes if distance field ambient occlusion is enabled and a viewport is resized to have zero height. Th ...

Creating Actors as default subobjects causes crash (casting Outer to Level)

If two custom classes are created in C++ (Class A & B) and a reference to Class A is created as a member of Class B and initialized in Class B's constructor, the editor will crash once a blueprint o ...

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 ...

Launching any QAGame map on Linux with an NVIDIA Card crashes at launch

Workaround:  "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 ...