Unreal Engine Issues

AnimNotify does not register when used in code

NotifyQueue.AnimNotifies Does not register the notifies set in the editor. EX: NotifyQueue.AnimNotifies.Num() will always return 0 even when notifies are set ...

PhysX errors when packaging for x86

Packaging for x86 in ETC1 will generate PhysX errors and cause the package to fail. The following error will occur multiple times throughout the package:UATHelper: Packaging (Android (ETC1)): Unrea ...

Multiplayer Preview in VR HMD input routed to all players

Multiplayer Preview in VR is not useful because HMD input is routed to all players. ...

Android Volume Up/Down input events no longer functioning

Android Volume input events have stopped triggering in 4.20 Tested on Pixel XL (8.0) Also occurring in Main at CL 4309299 ...

App crashes on launch when packaged for Vulkan with Scalable 2D/3D

No Vulkan SDK was installed Crashed on a Nexus 6P ...

Datasmith Tessellation does not work as operator in the visual dataprep

Crash in PlayReverse

Using Blueprint Interface functions that take other Interfaces as parameters can cause the Editor to crash in PIE mode.

If a Blueprint Interface function takes other Interfaces as parameters, and a circular dependency is present, the Editor will crash when the interface is called. CRASH REPORT: [Link Removed] CALLS ...

DX12/SM6 Sampler Counts increased for empty materials between 5.1 and 5.2

While not a major issue in and of itself, this can cause considerable headaches for materials where sampler counts in 5.1 were at 15/16 or 16/16 and when upgrading to 5.2 are now exceeding the built ...

When Mobile Deferred Shading, the DBuffer Decal is affected by metallic value

Use Deferred Shading (r.Mobile.ShadingPath=1) Enable DBuffer Decal All Lights’s mobility is Static Decal Material settings : Material Domain - Deferred DecalBlend Mode - TranslucentDecal Blend Mo ...