Might be a minor bug that was first visible in Improve UI for backup logs #3510 where log result code was being rearranged. In 2.0.4.5, BackendStatistics had fewer items. I’m not positive new ones are intentional but if they are, then they should be filled out. You could file a GitHub issue if you like. I see no obvious one.
Version: 2.0.4.5 (2.0.4.5_beta_2018-11-28)
Messages: [
2019-08-08 16:31:11 -04 - [Information-Duplicati.Library.Main.Controller-StartingOperation]: The operation Backup has started,
2019-08-08 16:31:16 -04 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: List - Started: (),
2019-08-08 16:31:17 -04 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: List - Completed: (),
2019-08-08 16:31:18 -04 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-b5917d9288f00413ea46f82ea83644b82.dblock.zip (675 bytes),
2019-08-08 16:31:19 -04 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-b5917d9288f00413ea46f82ea83644b82.dblock.zip (675 bytes),
...
]
Warnings: []
Errors: []
"Version": "2.0.4.22 (2.0.4.22_canary_2019-06-30)",
"EndTime": "0001-01-01T00:00:00",
"BeginTime": "2019-07-29T17:22:51.3884257Z",
"Duration": "00:00:00",
"MessagesActualLength": 0,
"WarningsActualLength": 0,
"ErrorsActualLength": 0,
"Messages": null,
"Warnings": null,
"Errors": null