Hub unread message count

I have a weird issue. I rely heavily on an unread message count. I have one email account (personal) w/ 1 unread message and another (business) w/ 7 unread, 8 total. When I get a new personal email the, hub unread count reverts back to 1unread, instead of 8. Does this make sense?.....& has anyone else experienced this issue?
Thanks in advance.

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