Today it happened again while saving an activity (same as the last time):
Client crashes silently:
Client log:

2023-10-31 09:31:36 8.5 2023-07-23 (build 85551360)
...
2023-10-31 12:18:58 AK 0.005 PaintAll

2023-10-31 12:19:04 AK 0.000 CallHal(POSAudit_ButtonClick)
2023-10-31 12:19:04 AK 0.000 CallHal(POSAudit_ButtonClick)
2023-10-31 12:19:04 AK 0.000 CallHal(POSAudit_EditField)
2023-10-31 12:19:04 AK 0.000 SetUpdate
2023-10-31 12:19:04 AK 0.000 SetUpdate
2023-10-31 12:19:04 AK 0.000 SetUpdate
2023-10-31 12:19:04 AK 0.008 PaintAll
2023-10-31 12:19:04 AK 0.000 PaintAll
2023-10-31 12:19:04 AK 0.008 PaintAll
2023-10-31 12:19:04 AK 0.005 PaintAll
2023-10-31 12:19:04 AK 0.000 SetUpdate

Server log with one logged in user + automatic gateway:
2023-10-31 12:17:26 (1) MM speed min: 0 ms, max: 3ms
2023-10-31 12:18:21 (1) AK Filtering records on the main thread!
2023-10-31 12:18:21 (1) AK Filtering records on the main thread!
2023-10-31 12:18:22 (1) AK Filtering records on the main thread!
2023-10-31 12:18:22 (1) AK Filtering records on the main thread!
2023-10-31 12:18:26 (1) System memory, RAM: 8.00GB, likely available RAM: 5.70GB, available swap: 0.00GB
2023-10-31 12:18:26 (1) MM speed min: 0 ms, max: 3ms

2023-10-31 12:18:43 (1) CallHal("CallTXIdleTasks")
2023-10-31 12:18:43 (1) 0.000 CallHal(CallTXIdleTasks)
2023-10-31 12:19:03 (1) SYSTEM Logoff 78.60.157.112:50882: exception on fd
2023-10-31 12:19:03 (1) AK CallHal("CallUnRegisterFromPresenceServer")

2023-10-31 12:19:03 (1) AK 0.001 CallHal(CallUnRegisterFromPresenceServer)
2023-10-31 12:19:03 (1) slot 4242862: set usage to free
2023-10-31 12:19:26 (1) System memory, RAM: 8.00GB, likely available RAM: 5.70GB, available swap: 0.00GB