Crash when building lighting with a skylight that draw lit translucent material

UE - Graphics Features - Aug 14, 2017

A common crash affecting many users in 4.17.0 ...

Custom event parameter set to 0 by default

UE - Gameplay - Blueprint - Aug 14, 2017

Default parameters do not appear to be retained for custom events. This was tested in 4.17 and the issue does not occur in 4.16. Appears to be a regression ...

[CrashReport] UE4Editor_UMG!CastChecked<UUserWidget,UObject>

UE - Anim - Sequencer - Aug 14, 2017

This is an early trending crash in the 4.17 release. This may be a regression as there is no initial evidence of this callstack occurring in 4.16. User DescriptionsJust compiled my widget Source C ...

Collection named 'NUL' is not recognized / saved.

UE - Editor - Content Pipeline - Content Browser - Aug 14, 2017

When a collection is named NUL, it will appear in the editor but does not get saved when the editor shuts down. When the project is restarted, the NUL collection is removed. ...

Editor freezes when creating a Collection named 'AUX'

UE - Editor - Content Pipeline - Content Browser - Aug 14, 2017

When a collection is created, naming the colleciton AUX causes the editor to lock up, requiring a force close from the task manager. Note: Naming the collection something else and then renaming it ...

Instanced Static Mesh components update incorrectly in Standalone and Packaged game

UE - Gameplay - Aug 11, 2017

Instanced Static Mesh components update incorrectly in Standalone and Packaged game. When hit, all of the instanced static mesh components will snap to a singular location instead of each individual ...

Gradle APKs include all architecture libraries instead of just the target

UE - Platform - Mobile - Aug 11, 2017

AAR files may contain multiple architectures and Gradle is including them all instead of filtering them to only include the active architecture in the APK. ...

Split Struct pins cause errors when a project is converted to 4.17

UE - Gameplay - Aug 11, 2017

Split Struct pins cause errors when a project is converted to 4.17. You are still unable to split struct pins even if a new variable is created for the struct. Only adding a new variable to the st ...

PerInstanceRandom does not work on Instanced Static Meshes spawned at runtime

UE - Graphics Features - Aug 11, 2017

PerInstanceRandom does not provide a random value when the material is being used on an Instanced Static Mesh that is spawned at runtime, the value is always the same. Regression?: Yes This did not ...

[CrashReport] Linux Crash in FActiveSound::GetWorld()

UE - Platform - Linux - Aug 11, 2017

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: SIGSEGV: invalid attempt to write ...