ShooterGame clients can fail to connect to a server under packet loss when network encryption is enabled

Networking - Jul 17, 2020

ShooterGame demonstrates the issue where when encryption is enabled, if the (unencrypted) EncryptionAck message is dropped, the resent messages will be encrypted since the server has enabled encrypt ...

Keying rotation with quaternion interpolation can give unexpected results

Tools - Sequencer - Jul 16, 2020

Adding keys when quaternion interpolation is enabled can lead to unexpected results.  ...

Core Class Redirect doesn't work when converting from a C++ class to a BP

Core - Jul 16, 2020

The Export map will properly be updated but the creation of the import will fail with SourceIndex == INDEX_NONE From MarcA:  I'm guessing the import source index is always none for native classe ...

Flickering artifacts are rendered when using Sky Atmosphere Component with Vulkan

Rendering - RHI - Jul 16, 2020

Rendering the SkyAtmopshere component using Vulkan with and without Vulkan (SM5) enabled causes artifacts to appear on screen on Windows and Linux.  This was reported and tested in 4.25.1 (CL-135 ...

Landscape normal behaves differently on CPU vs GPU

Tools - Landscape - Jul 16, 2020

One of our licensees encountered this issue. Landscape normal is calculated differently on GPU vs CPU. See screenshot below: left is GPU (with Edit Layers enabled) and CPU (Layers disabled) [Image ...

A hidden dedicated server is launched when playing as client

Tools - Jul 15, 2020

When we play in editor with the Play Net Mode set to Play as Client, a hidden dedicated server is launched. Previously in 4.24 the dedicated server would always launch with a visible command window. ...

FName diff in transaction will report all names as different if ordering is not properly maintained

Tools - Jul 15, 2020

All FName in transaction diff will be reported as modified if ordering isn't properly maintained making the proper uses of undo client `MatchesContext` not properly accurate ...

Rich Text Block automatic line wrapping doesn't work properly with image decorators

Tools - Slate - Jul 15, 2020

Rich text blocks don't seem to factor in the size of their embedded images properly when choosing where to wrap with autowrap enabled. ...

Weird reflection pixels of translucent objects with Ray Tracing Reflection

Rendering - Ray Tracing - Jul 15, 2020

[Image Removed] ...