Unreal Engine Issues
Unreal Engine Issues
Wrong Role in BeginPlay of startup actors respawned by a replay scrub
UE - Networking - Sep 3, 2021The Role/RemoteRole of net startup actors that get respawned during the replay scrub will be incorrect/swapped during BeginPlay (but not later for any onreps we process). ...
Replicated component destruction not reaching client
UE - Networking - Aug 31, 2021See the attached UDN for more information and a sample project reproducing the issue. This issue seems to happen due to a specific order of events. First, the component is destroyed, and garbage col ...
Include better comments/warnings for certain edge cases when using dependent actors with RepGraph
UE - Networking - Aug 17, 2021A recent UDN brought up two scenarios with dependent actors in RepGraph that could use better comments/warnings. The first is that calling ForceNetUpdate on an actor that is only replicated as a de ...
TextRenderComponents exist on editor dedicated server instances
UE - Networking - Aug 3, 2021It seems as though TextRenderComponents are not intended to exist on dedicated servers. In BaseEngine.ini, they are explicitly excluded: "+ClassesExcludedOnDedicatedServer=TextRenderComponent" This ...
Setting replicated TArray in PostLoad prevents repnotify from being called
UE - Networking - Jul 12, 2021See linked UDN for more details and a sample project reproducing the issue. The issue seems to be that the object's archetype doesn't have any changes made to the array in PostLoad, so the shadow st ...
Once an actor channel is closed by NetCullDistance, root motion movement synchronization stops working
UE - Networking - Jul 12, 2021Properties that uses DOREPLIFETIME_ACTIVE_OVERRIDE (ex. RepRootMotion ) will also skip replication when an actor channel is newly opened. This means that if the variables on the server side do not c ...
Delta struct serialized fast arrays replicating new elements with no changelist
UE - Networking - Jun 14, 2021There is a scenario where delta struct serialized fast arrays can replicate changes that introduce additional elements to the array, but without changelists containing the new data. This needs furt ...
FFastArraySerializer property not replicated when using ForceNetUpdate on dormant actor
UE - Networking - Jun 11, 2021See the linked UDN for more information. It also seems as though calling ForceNetUpdate before making the changes to the fast array results in the changes being properly replicated. ...
Replay streamers missing Flush implementation
UE - Networking - Jun 7, 2021The HTTP Streamer does not implement the Flush call on the streamer factory. ...
UObject properties in OnRep functions can be invalid
UE - Networking - May 20, 2021The shadow state used to store previous values on the client side is not GC aware, so when an object gets garbage collected it's not nulled out of the shadow state. This results in stale pointers b ...