I’ve enabled badge icon for inbox count on my Mac, but sometimes the badge would disappear. The issue can be temporarily fixed by going to Drafts preferences, disabling and re-enabling “Display inbox count on dock icon”.
I haven’t been able to identify a way to reliably reproduce the issue, but apparently it only happens when Drafts is re-launched after being quit, e.g. after a reboot.
macOS version: 12.0.1(21A559)
Drafts version: 30.0.1 (24)