Unreal Engine Issues

iOS Metal-based build crashes at launch with sub-levels.

Application crashes when deploying a game to iOS with Metal enabled. This has only been reproduced if a sub-level has been added to the starting level within the project. This seems to only happen ...

[CrashReport] ULevel::GetWorldSettings - UMaterialFunctionThumbnailRenderer::Draw

This is a common crash that has occurred since at least 4.16. The callstack is nearly identical to [Link Removed], which appears to be fixed in 4.18; and [Link Removed], which has not. The differen ...

[CrashReport] Mac crash - UE4Editor-Slate.dylib!PrepassWindowAndChildren(TSharedRef<SWindow, (ESPMode)0>)

This Mac crash originally occurred in 4.15 around March 2017, then decreased in frequency during 4.16 and 4.17. It may be starting to trend again in 4.18. There is one record of this occurring in 4 ...

CRITICAL: Regression: CRASH: SHOOTERGAME: Client crashes when using ServerTravel command

Update (5/4/15): New repro steps using Main (//depot/UE4/Promotable-CL-2535351): 1. Create a new Blueprint project 2. Create 3 new Levels: MainMenu, Lobby, and Level 3. Create 3 new GameModes: Main ...

IOS deviceCrash when input Korean Charactor on EditableTextBox

MovieRender Pipeline Skips Output Frames during GC

This is being seen in the wild... can release a temporary fix until 4.26 when we can change the headers and fix it for real. ...

Draw Brush Polys is not displayed when Separate Translucency is enabled

This is working properly in 4.21.2 ...

Importing heightmap crashes editor on Mac OS

Importing a landscape on a Mac crashes the editor. Landscape importing does not crash the editor on Windows OS. Frequency: 2/2 ...

Spatialization is inaccurate on iOS/tvOS

Also occurs in 4.16 Tested on iPhone6S+_4982 OS: 10.2.1 and tvOS 10.2 ...

Unable to play PlatformerGame on tvOS with gamepad or remote

User is unable to play PlatformerGame due to input mappings not being setup for the tvOS remote or gamepad. tvOS 9.2.2 ...