Unreal Engine Issues

FMonitoredProcess does not properly support -nothreading mode

For single threaded mode, we need to update FMonitoredProcess to handle processing in a single threaded fashion. Currently, we are continuing before the process has completed, which could result in ...

Vulkan crashes on Adreno Galaxy S7

Yosemite users do not receive an "Unsupported version of OSX" message when opening 4.15 from the Epic Games Launcher

When trying to launch the Unreal Engine on OS X Yosemite form the Epic Games Launcher, the editor will not give a warning saying that the current version of OS X is not compatible. We were able t ...

Multiple Post Processing displays are not working in Content Examples - Post Processing

While going through a GPU pass, film setting in post processing isn't working as expected. This does not seem to be GPU specific The displays should resemble the images in the documentation - PPE ...

Visible line down center of asset in ContentExamples Cloth 1.6

This does not occur in 4.13.2 at CL 3172292 ...

Misspellings in Material_Properties level of ContentExamples

In the Material_Properties level of ContentExamples, separate is misspelled in demo display 1.6 and tessellation is misspelled in demo display 1.8. ...

Ongoing D3D 'HUNG' crash in FD3D11DynamicRHI::GetQueryData

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 ...

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

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 ...

Launching QAGame for HTML5 creates an 'uncaught exception: out of memory'.

Launching onto HTML5 opens the browser to Uncaught Exception: out of Memory After running it on a 64-bit browser, the following is printed:uncaught exception: abort("Cannot enlarge memory arrays. E ...

"Combine Meshes" Breaks Material Slot Assignment

When importing an FBX with several different meshes and multiple materials with "Combine Meshes" enabled the materials will get assigned to incorrect portions of the mesh. I've included a version o ...