We found and fixed a bug that reported incorrect counts for some Views (on the Home page), that was triggered when users did a particular sequence of opening a View, applying the Assigned to Me toggle, and then returning to the Home page.
It was an edge case that took us a while to figure out because our own team didn’t see the problem happen; it only affected a few users.
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The counts shown on your Home Page, under the Views tab, should be correct now.