Unreal Engine Issues

Hit Box components created by listen server at runtime won't replicate

Reproduced 3/3 times. Issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. This is By Design. Replication for actors is disabled by default, and need to be enabl ...

pose search cook determinism issue

Regression for changes in code character movement not affecting multiplayers

If MoveForward() function is changed to affect the speed of the player, when playing in a multiplayer game player 1 will be affected by the change but player 2 will not be. This is a regression - i ...

Actors with Net Load On Client disabled still appear on Clients when Use Single Process is disabled

Actors with Net Load On Client disabled still appear on Clients when Use Single Process is disabled. Does NOT occur in packaged projects. Test project included. Set Use Single Process to false in E ...

High framerates result in desyncs with clients when using a dedicated server.

When a client operates at a high framerate on a dedicated server, their player movement will become desynced with the server. This manifests in different ways on different versions. In 4.21, it caus ...

Replication issues & warnings if a client hitches while the server seamless travels

If a client hitches while a server performs a seamless travel, the client will get multiple lines of logspam of these warnings:Warning: UActorChannel::ProcessBunch: SerializeNewActor failed to find/ ...

Some Niagara Fluid systems render black with 'Extend default luminance range in Auto Exposure settings' enabled with SunSky

Some Niagara Fluid systems render black with 'Extend default luminance range in Auto Exposure settings' enabled with a SunSky in the level. ...

Crash Occurs When Generated Item Type Doesn't Match Return Type

After creating the example generator that is displayed at the bottom of the documentation linked below, a crash will occur if the Generated Item Type is set to EnvQueryItemType_Actor (which is the d ...

Exporting and Importing Alembic File from Maya to Unreal Adds Extra Frame to Animation

When importing an Alembic file into Unreal Engine an extra frame is added automatically to the frame range in the import settings -abc file has been brought into Maya 2016 and exported again as an ...

Crash When server traveling from one level and then back again after calling a multiclass event (using Play as Listen Server)

A crash occurs when switching back and forth between levels when using seamless travel. This happens if a multicast was called and if it contains a member variable. ...