Badge Icon doesn't show up on macOS Big Sur

Description

I receive a new mail, I receive a notification and hear a sound. In the app UI badge icon in front of “Inbox” shows up fine.

Only issue is macOS dock icon which doesn’t show any badge.

This seems like a regression as I read on the discussion in Sep 2019 in Github issues that this issue previously was solved.

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To Reproduce…

  • Set up a gmail account.
  • Receive a mail.

Expected Behavior

  • You receive a badge icon on macOS dock icon.

Screenshots

Setup

  • macOS Big Sur 11.6.2
  • Mailspring 1.9.2
  • Have set up two accounts (one gSuite and one personal gmail)
  • My notification settings on Mailspring is correct. (Show badge on the app icon = “Show Unread Count”)