Release Notes

Preview Changelog

Fixed crash on disconnect when replicated string properties are active (use-after-free in string handle cleanup)
Fixed crash when nodes are modified on despawn
Fixed disconnect on app close not being detected
Fixed join_room and join_or_create_room with empty name failing instead of using random matchmaking
Changed improved snapshot interpolation with asymmetric delay adaptation (faster recovery, slower spike reaction)
Changed exposed snapshot interpolation tuning parameters in inspector (max_snapshot_gap, adapt_speed_up, adapt_speed_down, max_delay)
Changed decoupled position and rotation teleport detection (each evaluated independently)
Changed RPC ID hash now includes script class path for uniqueness across scripts
Added teleport snap mode setting (Source vs Projected) for forecast handler
Fixed forecast teleports being applied for both rot/pos if only one triggered
Fixed large-scene hash clash on nodes with same name
Fixed broadcast RPCs not working due to a wrong early check for replicators (not needed)
Fixed rotation teleport threshold 0 and 360 now both disable rotation teleport detection
Fixed position teleport threshold 0 now disables position teleport detection

Added despawn_on_disconnect option to FusionSpawner — controls whether spawned objects are automatically cleaned up when the owning client leaves (enabled by default)
Added scene_unloaded signal to FusionClient — emitted during disconnect cleanup before the auto-loaded scene is freed
Fixed disconnect callbacks not being processed correctly

Added auto-sync of velocity property for CharacterBody2D/3D roots (no manual .tres config needed)
Fixed Replication Editor panel selector not updating when switching between nodes in the scene tree

Fixed editor plugin crash on startup by migrating from deprecated add_control_to_bottom_panel() to new Godot 4.6 EditorDock + add_dock() API
Changed FusionReplicationEditor base class from VBoxContainer to EditorDock with DOCK_SLOT_BOTTOM default slot
Fixed infinite NOTIFICATION_THEME_CHANGED loop caused by add_theme_stylebox_override() on EditorDock
Removed timer-based deferred setup workaround in FusionEditorPlugin (no longer needed)

Added different ownership modes to the settings
Added physics and forecast replication (+ demo and docs)
Refactored replication mode architecture: transform/physics data auto-synced without .tres config
Added SmoothingMode enum (None, Interpolate, Forecast)
Added sleeping state replication for physics objects
Simplified demo scripts (removed manual interpolation code)