Using debug arrows silently crashes the map

General Issues and Bug Reporting
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Verse

What Type of Bug are you experiencing?

Stability

Summary

So, same code, different projects, the first doesn’t crash, the second does.

Upon calling draws (or maybe a bit after?), map crashes and I return back to Lobby. Nothing logged.

I uncomment the lines and it works.
Not sure about the steps, but I’ll tell everything I use

I call this function about 200 times (100 times on each device), sequentially or in separate threads, it will still crash.

DebugDraw.DrawArrow(
                    CachedOrigin.Point.GetTransform().Translation + vector3{Z := 25.0},
                    CachedDestination.Point.GetTransform().Translation + vector3{Z := 25.0},
                    ?ArrowSize := 500.0,
                    ?Duration := 60.0,
                    ?Color := GetRandomColor()
                )

Steps to Reproduce

  • Set 2 duplicate devices that use the same debug_draw_channel but each have its own debug_draw
  • Call DebugDraw.DrawArrow(...) at the same time (on the same coordinates?)
  • Be amazed!

(could be related to the number of draws too, > 200 for me)

Expected Result

Arrows drawing and crash logs

Observed Result

Instant crash, no log

Platform(s)

PC

Additional Notes

My character dies and sends the death event to my devices before the crash (normal?)

Show Logs

[2023.09.16-02.00.02:439][429]LogNet: UChannel::ReceivedSequencedBunch: Bunch.bClose == true. ChIndex == 0. Calling ConditionalCleanUp.
[2023.09.16-02.00.02:439][429]LogNet: UChannel::CleanUp: ChIndex == 0. Closing connection. [UChannel] ChIndex: 0, Closing: 0 [UNetConnection] RemoteAddr: 18.168.40.199:15051, Name: IpConnection_0, Driver: IpNetDriver_0 IpNetDriver_0, IsServer: NO, PC: NULL, Owner: ValkyrieBeaconClient_0, UniqueId: MCP:f22efdab8ea744b9affa476f29171b55
[2023.09.16-02.00.02:439][429]LogNet: UNetConnection::Close: [UNetConnection] RemoteAddr: 18.168.40.199:15051, Name: IpConnection_0, Driver: IpNetDriver_0 IpNetDriver_0, IsServer: NO, PC: NULL, Owner: ValkyrieBeaconClient_0, UniqueId: MCP:f22efdab8ea744b9affa476f29171b55, Channels: 5, Time: 2023.09.16-00.00.02, TimeSinceTickDispatch: 0.003782, TimeSinceRecv: 0.000800, TimeSinceTickFlush: 0.013031, TimeSinceSend: 0.013021
[2023.09.16-02.00.02:439][429]LogNet: UNetConnection::SendCloseReason:
[2023.09.16-02.00.02:439][429]LogNet: - Result=ControlChannelClose, ErrorContext=“ControlChannelClose”
[2023.09.16-02.00.02:439][429]LogNet: UChannel::Close: Sending CloseBunch. ChIndex == 0. Name: [UChannel] ChIndex: 0, Closing: 0 [UNetConnection] RemoteAddr: 18.168.40.199:15051, Name: IpConnection_0, Driver: IpNetDriver_0 IpNetDriver_0, IsServer: NO, PC: NULL, Owner: ValkyrieBeaconClient_0, UniqueId: MCP:f22efdab8ea744b9affa476f29171b55
[2023.09.16-02.00.02:439][429]LogBeacon: Verbose: Client beacon (ValkyrieBeaconClient_0) socket has closed, triggering failure.
[2023.09.16-02.00.02:439][429]LogValkyrieBeacon: (ValkyrieBeaconClient_0) AValkyrieBeaconClient::OnFailure AValkyrieBeaconClient::OnFailure - We have registered a failure in the Valkyrie beacon.
[2023.09.16-02.00.02:439][429]LogBeacon: Verbose: Client beacon (ValkyrieBeaconClient_0) connection failure, handling connection timeout.
[2023.09.16-02.00.02:439][429]LogNet: DestroyNamedNetDriver IpNetDriver_0 [IpNetDriver_0]
[2023.09.16-02.00.02:442][429]LogExit: IpNetDriver_0 IpNetDriver_0 shut down
[2023.09.16-02.00.02:451][430]LogValkyrieRequestManagerEditor: OnValkyrieBeaconNotfiedOfServerShutdown - game server was shutdown
[2023.09.16-02.00.02:451][430]LogValkyrieRequestManagerEditor: Executing Step DestroyValkyrieBeacon
[2023.09.16-02.00.02:451][430]LogValkyrieRequestManagerEditor: Destroying valkyrie beacon
[2023.09.16-02.00.02:451][430]LogValkyrieSummary: Destroying Valkyrie Beacon
[2023.09.16-02.00.02:453][430]LogBeacon: Verbose: Destroying beacon ValkyrieBeaconClient_0, netdriver NULL
[2023.09.16-02.00.02:453][430]LogValkyrieRequestManagerEditor: Executing Step ClearFoundConnectInfo
[2023.09.16-02.00.02:453][430]LogValkyrieRequestManagerEditor: Executing Step HandleServerConnectionLost
[2023.09.16-02.00.02:453][430]LogValkyrieFortniteEditorLiveEdit: Verbose: FValkyrieFortniteEditorLiveEdit::ServerConnectionLost
[2023.09.16-02.00.02:453][430]LogValkyrieFortniteEditorLiveEdit: Verbose: FValkyrieFortniteEditorLiveEdit::SetUploadRequired 1
[2023.09.16-02.00.34:793][528]LogEOSSDK: LogEOSPresence: Received presence update. LocalUserId=[f22…b55] PresenceUserId=[cc9…226] RichText=
[2023.09.16-02.02.19:462][842]LogEOSSDK: LogEOSPresence: Updating Presence to Online. LocalUserId=[f22…b55] RichText=
[2023.09.16-02.03.10:796][996]LogEOSSDK: LogEOSPresence: Received presence update. LocalUserId=[f22…b55] PresenceUserId=[983…cf6] RichText=
[2023.09.16-02.04.44:131][276]LogEOSSDK: LogEOS: Updating Product SDK Config, Time: 1372.627930
[2023.09.16-02.04.46:130][282]LogEOSSDK: LogEOS: SDK Config Product Update Request Completed - No Change
[2023.09.16-02.04.46:130][282]LogEOSSDK: LogEOS: ScheduleNextSDKConfigDataUpdate - Time: 1373.960693, Update Interval: 358.734711
[2023.09.16-02.04.49:797][293]LogEOSSDK: LogEOS: Updating Product SDK Config, Time: 1409.972046
[2023.09.16-02.04.52:464][301]LogEOSSDK: LogEOS: SDK Config Product Update Request Completed - No Change
[2023.09.16-02.04.52:464][301]LogEOSSDK: LogEOS: ScheduleNextSDKConfigDataUpdate - Time: 1411.971802, Update Interval: 305.286407
[2023.09.16-02.08.50:806][ 16]LogEOSSDK: LogEOSPresence: Received presence update. LocalUserId=[f22…b55] PresenceUserId=[6eb…0fd] RichText=
[2023.09.16-02.10.20:474][285]LogEOSSDK: LogEOS: Updating Product SDK Config, Time: 1740.647949
[2023.09.16-02.10.23:140][293]LogEOSSDK: LogEOS: SDK Config Product Update Request Completed - No Change
[2023.09.16-02.10.23:140][293]LogEOSSDK: LogEOS: ScheduleNextSDKConfigDataUpdate - Time: 1742.647339, Update Interval: 349.174469
[2023.09.16-02.11.06:809][424]LogEOSSDK: LogEOS: Updating Product SDK Config, Time: 1755.306152
[2023.09.16-02.11.08:810][430]LogEOSSDK: LogEOS: SDK Config Product Update Request Completed - No Change
[2023.09.16-02.11.08:810][430]LogEOSSDK: LogEOS: ScheduleNextSDKConfigDataUpdate - Time: 1756.637817, Update Interval: 356.480591
[2023.09.16-02.11.58:008][396]LogSlate: Took 0.018936 seconds to synchronously load lazily loaded font ‘…/…/…/Engine/Content/Slate/Fonts/DroidSansFallback.ttf’ (3848K)

2

DrawLine is also affected by this.

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