Gmail Categories Indicates Email in Them When They Are Empty

[Skeezix]

When I tap Gmail > Menu, it sometime indicates there is email in some of the categories (Inbox, Sent, All mail, Spam, etc.) But when I tap one of the icons that is showing I have email in that category, it says Nothing in (category). Why is that?
(I'm up to date with my updates.)

 

[B. Diddy]

Have you already tried clearing the app cache for Gmail in Settings>Apps, then Force Stopping it, and then opening again?

 

[Skeezix]

Thank you for replying. Yes, I just tried that but it does not work. Here's a screenshot - if I tap on a category that shows it has something in it, I get something like "Nothing to show":

 

[B. Diddy]

Ok, the next step would be to clear the app data (not just the app cache) for Gmail in that same system settings menu. When you reopen Gmail, let it sign back into your Google account, and then give it a few seconds to re-sync your folders. Does the problem persists?