Unreal Engine Issues

Playrate / slomo causes motion blur length to change incorrectly

Discuss with the team what the actual desired behavior should be and adjust this calculation. This one is meant to stabilize the motion blur when we have a variable delta time but may be having kn ...

HTML does not properly show mouse with Set show mouse cursor node

When playing a project on HTML 5, the node "Set show mouse cursor" does not appear when the node is used. ...

Crash Occurs when using the FreezeRendering Console Command in a Packaged Win64 Project

A crash occurs when entering the console command, 'Freezerendering' in a packaged Windows 64 bit project. The freezerendering command is used for debugging and performance purposes. An interesting ...

[CrashReport] Crash on Mac during Editor load (out of memory loading Boot.ddc): Assertion failed: A.ArrayNum >= 0

This is a common crash occurring for Mac users in the 4.16 release. It appears to occur during editor startup. The below details are taken from user log files.LogFileManager:Error: Requested read of ...

Editor hangs at opening Widget blueprint editor when editor preferences window is up.

Editor is not responding when opening WB with Editor preferences window is up. ...

[CrashReport] Assertion failed: Canary == ShaderMagic_Initialized

This is a common crash among the community since at least the 4.14 release. Additional information is not currently available. This is spread among numerous different CrashGroups between releases w ...

Ensure when adding more than one camera to world in VR mode

Ensure condition failed: Lhs.CurrentNum == Lhs.InitialNum [Link Removed] [Line: 197] Array has changed during ranged-for iteration! Ensure occurs after dragging in multiple cameras into the world i ...

Pasting nodes into level blueprint crashes editor

BinnedMalloc and BinnedMalloc2 performance on Linux is not good

This test took 13 seconds using Binned2 and 10 seconds using Binned1. It took 0.06 seconds using jemalloc ...

Building for Gear VR Distribution fails due to missing Oculus lib

Users have reported that building for Distribution on Gear VR results in failure due to a missing Oculus library. The error they receive is as follows: UATHelper: Packaging (Android (ETC2)): [javac ...