Undoing the pasting of a copied node from the Blueprint Diff tools causes an access violation crash

UE - Gameplay - Blueprint Editor - Aug 24, 2017

The editor crashes with an Access Violation if a node that was copied and pasted from the Blueprint Diff tools is removed via an undo. Regression?: No This issue also occurred in 4.16 Branches tes ...

[CrashReport] UE4Editor_Sequencer!FSequencerEdMode::CleanUpMeshTrails() [sequenceredmode.cpp:186]

UE - Anim - Sequencer - May 30, 2017

This is a top crash occurring in the 4.16 release. Despite the callstack occurring in Sequencer, many users are experiencing this crash while working in UMG. User Descriptionsscaling track in widge ...

[Feature Request] Add a project setting to change the number of texture samplers to support in ES2

UE - Platform - Mobile - Feb 23, 2018

Add an item to Project Settings, Android, "Support 16 Texture Samplers on ES2". The bBuildForES2 flag must be enabled for this setting to be active. The tooltip should read "Allow 16 texture samp ...

Packaging with Steam VR plugin disabled requires an IDE

UE - Platform - XR - Jul 20, 2017

Disabling the SteamVR plugin in a Blueprint-Only project causes the packaging process to require an IDE to complete, as it requires compilation. Regression?: Yes This did not occur in 4.16.2 Note: ...

Crash upon adding an Interface to a Blueprint that has a function name that matches the name of a variable in the Blueprint.

UE - Gameplay - Blueprint Compiler - Oct 13, 2017

When you add an Interface to a Blueprint that contains a variable with the same name as one of the Interface's functions, the editor will crash upon compiling the blueprint. In 4.16, this only cause ...

Linux: async loading code crashes when memory pooling is enabled

UE - Platform - Linux - May 9, 2017

The reasons is a bad interaction between FIND_MEMORY_STOMPS code in AsyncLoading.cpp and memory pooling. Async loading will set PrecacheBuffer to read/only and will never reset it back, expecting ...

Gamepad continues to control editor menus during Mobile PIE session

Tools - Dec 4, 2017

When using a Gamepad, there is an issue where input from the controller continues to control editor menus during Mobile PIE session. This issue does not a appear to be a regression. Versions Tested ...

OnActorSpawned is called prior to FinishedSpawning for PlayerControllers and actors spawned with bDeferConstruction set to true

UE - Gameplay - Oct 12, 2017

When a PlayerController or any actor with bDeferConstruction set to true is spawned, OnActorSpawned.Broadcast is called prior to FinishSpawning which can cause issues as some components may not be i ...

Dynamic Light placed inside of a Dynamic Static Mesh doesn't pass through the geometry

UE - Graphics Features - Jun 2, 2017

Dynamic Light placed inside of a Dynamic Static Mesh doesn't pass through the geometry. The static mesh is not double-sided. User Description: It appears that in Unreal 4.16 one loses the ability ...

Color and Opacity animation option does not play for Button component

UE - Editor - UI Systems - Aug 25, 2017

Color and Opacity animation option does not play for Button component, this occurs both in the Widget editor and during play. This issue is not a regression Versions Tested: 4.16.3 - CL: 3561208 - ...