Compiling a project while any editor process is open triggers a hot reload

UE - Foundation - Cpp Tools - Hot Reload - Jan 20, 2017

If you attempt to compile a project while an editor process is running, even if it is of another project entirely, it will hot reload the project instead of doing a normal compile. This can create i ...

Possible crash reimporting destructible assets

UE - Simulation - Physics - Destruction - Jan 20, 2017

This won't always happen, but the call in ImportDestructibleMeshFromApexDestructibleAsset to LODModel.ReleaseResources(); will enqueue render commands to release the resource, but the call after tha ...

Find Collision UV Returning Unexpected Values

UE - Gameplay - Jan 19, 2017

Find Collision UV is returning values that are above 1.0, when it is expected that these values would remain between 0 and 1. ...

Crash Occurs When Using NetProfile While Running Packaged Build With Connected Client

UE - Networking - Jan 19, 2017

A crash is occurring when attempting to use the netprofile command while running a packaged game with the server on one PC and the client on another. ...

Mouse control is not obtained when clicking on a game's title bar from another app

Tools - Jan 18, 2017

A licensee has reported that gaining focus of a UE4 game window by clicking the window's title bar results in the game only receiving keyboard input and no mouse input until you also click in the ga ...

D3D HUNG crash - FD3D11DynamicRHI::RHIReadSurfaceFloatData()

UE - Graphics Features - Jan 18, 2017

This is one of the widespread D3D Hung crashes that have existed since 4.14. This particular callstack has affected around 300 users. The issue has been successfully reproduced on a home PC. Dxdi ...

Forward Rendering shading flicker on some assets set to Static

UE - Graphics Features - Jan 18, 2017

When forward shading is enabled some assets will have a shadow flicker along their face geometry. It has a similar look of z-fighting with polygon faces. This issue does not happen in Deferred rende ...

COTF has issues with out-of-source projects

It is expected that cooking, including COTF, will fix-up all string asset references. There were a few reasons this wasn't happening, but we should get these fixes into 4.15 as the impact was worst ...

Ongoing D3D 'HUNG' crash - FD3D11Viewport::PresentChecked()

UE - Graphics Features - Jan 18, 2017

This is a new ticket for the D3D 'HUNG' crash originally reported in [Link Removed]. Some fixes were introduced in 4.14.2 that decreased the occurrences of this crash, but other cases are still ongo ...

User defined struct pins shows display a string of letters & numbers when switching Editor language

UE - Gameplay - Blueprint - Jan 18, 2017

Editor language switch can turn struct get/set nodes pins(split) to display extra string of letters & numbers after their original name. ...