Unreal Engine Issues

Particle memory can be corrupted leading to a crash

Crash when launching Google VR project

Attempting to launch a packaged Google VR game on android causes the game to crash. This has occurred on two other devices. This occurs in Main as well as Dev-VR. ...

GarbageCollection - Ensure occurs when force deleting content that is still referenced in memory

While AdHoc testing in //UE4/Release-4.16 CL 3437809 in Binary – I found that deleting the projectBP folder of any Template project causes an ensure. I believe this issue is due a step in the garbag ...

Editor Crashes when working in QAGame TM-Sequencer_EventTrack - TCString<TCharType>::Strlen(InName)

Editor Crashes when working in QAGame TM-Sequencer_EventTrack - TCString<TCharType>::Strlen(InName) This Assert happens randomly throughout the repro-steps. I am unsure what about the process cause ...

Crash when moving a sprite imported as part of a spritesheet to another folder if the sprite names had invalid characters

Attempting to move any of the sprites created from this .json to another folder from within the Content Browser crashes the project. CRASHREPORT: 442758 ...

Movie Render Queue Deferred Lighting(Detail Lighting) only outputs Lighting Only

This is not a regression. Tested in //UE4/Release-4.27 CL#18319896 Movie Render Queue Deferred Lighting(Detail Lighting) appears to only output Lighting Only.  ...

Crash when adding a Material Layer with a Static Component Mask Parameter node to a Material Instance

When adding a Material Layer, that has a Static Component Mask Parameter node in it, to a Material Instance, the editor will crash.   The ability to set Material Attribute layers in a Material Inst ...

Crash when a material with a texture parameter is deleted when it has instances with static permutations

This was the simplest solid repro I could get on this bug. The callstack is similar to [Link Removed] Also came across several Shader Compiling Manager crashes while attempting to repro this crash ...

Crash on Adding Elements to Array On Instance of Actor in the Level

When attempting to add an array element to an array that exists on a component contained within an actor that is instanced in the level, the editor will crash. This does not occur if an array elemen ...

"Assertion Failed" crash while Force Deleting the FirstPerson folder within FirstPersonTemplate project

The Editor crashes while Force Deleting the FirstPerson folder within a FirstPersonTemplate project. This behavior is consistent between Blueprint / Code versions of FirstPersonTemplate projects. ...