Notifications aren't removed from the status bar once read in the UI

[leo60228]

Steps to reproduce the problem

1. Receive a notification
2. Don't interact with it from the dropdown
3. Read (and dismiss) it from the website

Expected behaviour

Notification should disappear from status bar

Actual behaviour

Notification remains in status bar until dismissed again

Specifications

I'm using glitch-soc@bb12af7 (includes upstream 3.5.1), but I don't see any differences in the relevant areas from upstream.
I'm on Android 11 and using Firefox 100.0b7.

[ClearlyClaire]

I'm not sure what you mean. How was it dismissed, and from where doesn't it get removed?

[leo60228]

Completely forgot to answer this, sorry... Here's the specific order of events:

1. Open Mastodon in a browser tab
2. Allow notifications
3. Switch to another application
4. Receive a notification from Mastodon
5. Without dismissing it from Android's notification drawer, return to the Mastodon tab
6. Read the notification (so that the Mastodon UI considers the notification to no longer be unread)

After doing this, the notification is still in Android's notification drawer. I assume a similar issue exists on iOS and possibly some desktop platforms. I believe that it should be possible for Mastodon to solve this using Notification.close?

[ClearlyClaire]

Alright! Yeah, we should probably do that. Currently, we do not hold any reference to the notifications once they are created, but maybe we can use something like https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/notifications/getAll (EDIT: that is a WebExtension API)