Unreal Engine Issues

Memory usage regression in the editor caused by FArchiveAsync2 buffers

Owner No See option does not correctly apply to widgets using screen space

When using the Owner No See option with Widgets, if the widget is set to display on the screen rather than the world, then the option does not affect the widget as intended. Other forms of changing ...

Slomo command has no effect when Run Dedicated Server is set

Using the slomo # command when Run Dedicated Server is set has no effect. Command still functions when this checkbox is set to false. Regression: No, same behavior occurs in 4.16.3 ...

Crash while unloading a streaming level while spawned decals exist in the unloaded level

When unloading a level containing a decal that is using a dynamic material instance the editor will crash. ...

Crash when pasting transform in Sequencer

The editor crashes when trying to copy and paste a key in sequencer if the mouse has been slightly moved. ...

Foliage meshes do not appear in high res screenshots after certain amount

When using the Engine's High Res Screenshot tool, there is a limit on the amount of foliage that can be present before the meshes stop appearing. This number is around 1500 meshes, though I was not ...

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

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 ...

Level Sequences with EnableCinematicMode set will enable cinematic mode when the sequence actor is spawned, not when the sequence is played.

We've added the option to automatically enable cinematic mode from a level sequence, but the change is made in the sequence actor's BeginPlay. This won't cause problems if the sequence is spawned an ...

Editor cannot handle blueprint structure using an Actor Map variable

If a blueprint structure contains a map variable with Actor Class Reference as the key, populating the map with a custom blueprint (ActorSet) and adding a variable of the structure to any other blue ...

Blueprint needs to be compiled if another blueprint sharing an interface is compiled

Blueprint needs to be compiled if another blueprint sharing an interface is compiled Regression: This does not happen in 4.16 ...