Thanks, feedback on grouping is super appreciate! 

1. I have noticed a lot of 1 alert groups in the Chromium tree in particular. I think your guess is probably right. We might want to consider showing recently resolved alerts that are attached to groups. Though we'd have to make it clear in the UI that those particular group members are not active anymore. 

2. Thanks for noting this! I have a bug for this here: https://bugs.chromium.org/p/chromium/issues/detail?id=723875 I want to work on this soon. 

3. The UUID is supposed to be surfaced as the name for the group and is editable to allow users to set a custom title. There is a discussion on improving the titles for alerts here: https://bugs.chromium.org/p/chromium/issues/detail?id=744755 (I plan to implement this soon. 

For #1 could you just pretend it's not grouped if there's only 1 alert in the group?

Will repurpose this bug for #1 since 2 and 3 have separate bugs.

Displaying groups with 1 alert similarly to a normal alert should be okay I think. 

There are some things that would be odd about it though. For example, at the moment, you can't group two groups together, so that would potentially be confusing to users. 

I think that's probably alright though. We plan to eventually implement grouping to groups together anyways. 

I think there might be some oddities around annotations. For example, if you ungrouped the lone alert group at the moment, it'd lose its annotations. For now, we could probably just hide the ungroup button for single alert groups.

One potential issue is if you create a group, add some comments (which will end up attached to the group) and you remove the other alerts, it's useful to keep the history.

chromeos and gardener tree will show recently resolved alerts in the group.  It currently treats the entire group as resolved if any alert is resolved, but I think that needs to be revisited due to the way alerts are autoresolved.