No scheduled snapshots while open, and no notification of failure

[aiqc]

I took 2 snapshots. Then I left the Timeshift app open so that I could see the scheduled snapshots coming in.

However, I came back a few hours later to find that Timeshift was not recording the hourly scheduled snapshots as expected.

I opened the logs and saw this in one of the hourly attempts:

[15:00:01] Main: check_dependencies()
[15:00:01] Another instance of this application is running (PID=25514)

So a few things come to mind:

• Timeshift doesn't work when timeshift is open? I'd prefer to leave it open as a reminder to take snapshots at important times and to add comments about changes to my build.
• Timeshift does not provide errors/ notifications of failed snapshots in the UI or OS alerts anywhere else.

• Ubuntu 22.04.3 (not Mint)
• Timeshift v21.09.1-1 (installed from default apt repo)

[aiqc]

I close Timeshift and come back an hour later to find that a successful snapshot has occured.