Nautilus file operations' progress bar always at 0

[Carlos Nihelton]

I was looking at bug #1868420 during a bug triage session and in trying to reproduce the reported behaviour I got a quite different result:

Ubuntu 24.04.3 after doing all applicable upgrades, GNOME 46 on Wayland, Nautilus 1:46.4-ubuntu0.2, ubuntu-dock 90ubuntu3.

- Started a compression files operation (slow operation)
- Monitored Nautilus own progress bar (displayed accordingly)
- Monitored the progress bar shown in the dock (no forward progress, stayed at 0 all the time)

Whether I closed Nautilus or not no progress would be shown in the dock. Eventually a little later after the system notification is shown advertising that the operation completed, the progress bar, which was still showing no progress, finally disappears.

With Ubuntu 26.04 (dev branch) I originally got yet another behaviour: the progress bar didn't even show up. But that was three weeks ago. Testing again today with the following versions I see the same behaviour reported for Noble (progress bar visible but always at 0 independent of whether Nautilus is open or closed).

GNOME 49 on Wayland, Nautilus 1:49.1-2ubuntu3, ubuntu-dock 102ubuntu2.

The attached screenshot is from the 26.04 device, it shows the copy operation about 70% done but the progress bar in the dock remains at 0.

[Daniel van Vugt (vanvugt)]

This seems to overlap with bug 2062980 enough that we can call them the same bug. To avoid further duplicates we'd only need to ensure a fix is tested with multiple operations - copy, compression, etc.