Environment: Win 7, Chrome
1) Ensure you have the latest desktop app installed and community server added
2) Quit the app
3) Open Chrome (or any supported browser) and paste the following into address bar "mattermost://community.mattermost.com/core/channels/developers"
Expected: "Open Mattermost?" dialog
Actual: "Open URL:mattermost?" wording on the dialog. See image.