My Discord nickname: decavoid.
This autosave was created after I had to restart 5 times because the belt preview stopped appearing: 23-08-25_15-37-autosave-paused.save
Logs:
23-08-25_12-51-59_9670.log
Exceptions in logs:
I 08:52:57,955 S3331965 ~Mai: Game was initialized in 97 steps and took 53,1 seconds to complete.
A 08:57:11,278 S3331965 ~Sim: Bool value is 'false' but value 'true' was expected.
at Mafi.Core.Factory.Transports.TransportPathFinder.extendPath (System.Int32 nodeIndex, System.Int32 parentNodeIndex, Mafi.Core.Factory.Transports.TransportPathFinder+NodeMutable parentNode, System.Boolean ramp) [0x00000]
at Mafi.Core.Factory.Transports.TransportPathFinder.<expandNeighborsTowards>g__tryExtendTo|119_0 (Mafi.RelTile3i newRelPosition, System.Boolean ramp, Mafi.Core.Factory.Transports.TransportPathFinder+<>c__DisplayClass119_0& ) [0x00000]
at Mafi.Core.Factory.Transports.TransportPathFinder.expandNeighborsTowards (System.Int32 nodeIndex, Mafi.Core.Factory.Transports.TransportPathFinder+NodeMutable node, Mafi.Direction903d direction) [0x00000]
at Mafi.Core.Factory.Transports.TransportPathFinder.continuePathFinding (System.Int32& iterations) [0x00000]
at Mafi.Core.Factory.Transports.TransportPathFinder.ContinuePathFinding (System.Int32& iterations, Mafi.Collections.ImmutableCollections.ImmutableArray`1[Mafi.Tile3i]& outPivots) [0x00000]
at Mafi.Unity.InputControl.Factory.PathFindingTransportPreview.simUpdate () [0x00000]
at Mafi.EventNonSaveable.Invoke () [0x00000]
at Mafi.EventNonSaveable.InvokeTraced (System.String traceCategory) [0x00000]
at Mafi.Core.Simulation.SimLoopEvents.InvokeGameStep (Mafi.Core.Input.IInputCommandsProcessor inputCommandsProcessor) [0x00000]
at Mafi.Core.Simulation.SimulationBackgroundTask.PerformWork () [0x00000]
X 08:57:11,279 S3331965 ~Sim: Exception thrown in event callback.
---> IndexOutOfRangeException: index
at Mafi.Collections.Lyst`1[T].get_Item (System.Int32 index) [0x00009]
at Mafi.Core.Factory.Transports.TransportPathFinder.computeCollisionsReturnConnCollided (System.Int32 nodeIndex, System.Int32 parentIndex, System.Int16& occupiedArrIndex) [0x000b3]
at Mafi.Core.Factory.Transports.TransportPathFinder.extendPath (System.Int32 nodeIndex, System.Int32 parentNodeIndex, Mafi.Core.Factory.Transports.TransportPathFinder+NodeMutable parentNode, System.Boolean ramp) [0x00130]
at Mafi.Core.Factory.Transports.TransportPathFinder.<expandNeighborsTowards>g__tryExtendTo|119_0 (Mafi.RelTile3i newRelPosition, System.Boolean ramp, Mafi.Core.Factory.Transports.TransportPathFinder+<>c__DisplayClass119_0& ) [0x000c8]
at Mafi.Core.Factory.Transports.TransportPathFinder.expandNeighborsTowards (System.Int32 nodeIndex, Mafi.Core.Factory.Transports.TransportPathFinder+NodeMutable node, Mafi.Direction903d direction) [0x000f2]
at Mafi.Core.Factory.Transports.TransportPathFinder.continuePathFinding (System.Int32& iterations) [0x00105]
at Mafi.Core.Factory.Transports.TransportPathFinder.ContinuePathFinding (System.Int32& iterations, Mafi.Collections.ImmutableCollections.ImmutableArray`1[Mafi.Tile3i]& outPivots) [0x00000]
at Mafi.Unity.InputControl.Factory.PathFindingTransportPreview.simUpdate () [0x00048]
at Mafi.EventNonSaveable.Invoke () [0x00015]
E 08:57:21,360 S3331965 ~Sim: Too many exceptions by non-savable Action on 'Mafi.Unity.InputControl.Factory.PathFindingTransportPreview'.
at Mafi.EventNonSaveableBase`1[TAction].RecordExceptionForCallbackAt (Mafi.EventNonSaveableBase`1+RegisteredCallback[TAction] callback) [0x00000]
at Mafi.EventNonSaveable.Invoke () [0x00000]
at Mafi.EventNonSaveable.InvokeTraced (System.String traceCategory) [0x00000]
at Mafi.Core.Simulation.SimLoopEvents.InvokeGameStep (Mafi.Core.Input.IInputCommandsProcessor inputCommandsProcessor) [0x00000]
at Mafi.Core.Simulation.SimulationBackgroundTask.PerformWork () [0x00000]
at Mafi.Core.GameLoop.BackgroundTaskRunner.threadMain () [0x00000]
at System.Threading.ThreadHelper.ThreadStart_Context (System.Object state) [0x00000]
at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000]
at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000]
at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state) [0x00000]
I 08:58:01,870 S3331965 ~Mai: GameSaver: Saving took: 1310 ms
At that time glass factory ghost plan was on scene. Also I was working on a blueprint of 14 belts going under the bridge.

Bridge blueprint:
B848: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
I suspect that this bug is caused by * Improved responsiveness of transport path-finding. in 0.5.4f
Files not imported: 23-08-25_15-37-autosave-paused.save