Print history has inaccurate “print duration” and “used filament” when using T1

[Dycus]

What happened

On the Fluidd print history page, all prints have a correct “total duration”.
Prints using T0 also have correct "print duration" and "used filament".
But prints that use T1 almost always have 0m 0s for print duration, and 0.0mm (or sometimes nonsense, even negative numbers) for used filament.
On occasion, a T1 print will show a correct total duration, but the filament used is still wrong. (A recent print shows 2h 27m 6s / 2h 34m 30s / 58.2 mm for print duration / total duration / filament used. I promise more than 58mm of filament were used in this 2.5hr print.)

I have a dual-extrusion printer (Replicator 2X). I pretty much only use only one tool in a print. I haven't tested this behavior with a dual-extrusion print yet.

I initially reported this issue to the Fluidd team, but they say they pull this data directly from Moonraker and so forwarded me here.

Client

Fluidd

Browser

Firefox

How to reproduce

Run a print that uses only T1 (or probably any non-T0 tool) and check the print statistics/history page once finished.

Additional information

moonraker.log
klippy.log

[Arksine]

Moonraker pulls the print data stored in job history from Klipper. It appears that you are using a fork of Klipper, so I would recommend attempting to reproduce with pristine Klipper. If you are able to do so you can report the issue on the Klipper Discourse.