Same issue, but my number is "5". When I wake my iPhone (current iOS, all apps updated) it always shows 5 notifications when there has been RC activity I've handled on the desktop app. When I open the phone app, I see it updating itself, I usually find no actual new/outstanding items, and if I go back to home screen, notification red dot on badge is gone. Interestingly, if the app on phone is showing the 5 in the red dot, and phone goes to sleep, then if there is RC activity the number goes up from 5 (so I'll see 6 or 8 depending on how many actions happened).
This is quite annoying, as I waste lots of time opening the RC app to see if I missed something and finding out it's just the bug.
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