Windows Task Bar icon is not indicating new unread message

[mkarg]

Steps to reproduce

• On Microsoft Windows, start Element Web in browser. The task bar now shows an icon for the just opened browser window.
• On the Element Web browser window click the "minimize" button, so the window is invisible now, but the task bar shows an icon for the still running but invisible browser window.
• Ask somebody to send you a Matrix message.
• Check the task bar icon of the Element Web browser window.

Outcome

What did you expect?

A badge appears on the task bar icon of the Element Web browser window, indicating there is a new unread message.

What happened instead?

No badge appears on the task bar icon of the Element Web browser windows. You will not understand that you received a new message.

Operating system

Windows

Browser information

Chrome, Edge

URL for webapp

private

Application version

1.11.76

Homeserver

local Synapse

Will you send logs?

No

[t3chguy]

There's no standard Web Browser API to draw on the browser icon. There's a Chrome Windows & Chrome macOS specific one https://developer.mozilla.org/en-US/docs/Web/API/Navigator/setAppBadge#browser_compatibility

Empirically though this API does not work unless you are in PWA mode (i.e you install the app)

In which case we already call setAppBadge. https://github.com/element-hq/element-web/blob/develop/src/vector/platform/PWAPlatform.ts#L14-L20