"All" count sometimes doesn't equal the sum of all category counts

[parnic]

Describe the bug
It's possible for the All count to not match the total count of all unreads in the categories below it.

To Reproduce
Unfortunately I'm not sure what caused this. I keep Commafeed open in a tab pretty much all the time and check on it a few times a day. Today I went back to check and had unreads in 4 different categories. I read through all the articles in 3 of the categories, using the J key to step through them all then clicking the next category, and realized the counts didn't match once I got down to 1 category remaining.

Expected behavior
All count matches the sum of all categories beneath it.

Screenshots

Environment (please complete the following information):

• commafeed.com or self-hosted: self-hosted
• If self-hosted, CommaFeed version [e.g. 5.1.0 (a3dcb2c)]: Server was running CommaFeed version 5.3.4 (4201501)., but since I hadn't refreshed my tab in a while, the About page for me said CommaFeed version 5.3.3 (a337b01). Perhaps that's why?
• Browser [e.g. chrome, firefox]: Brave (Chrome)
• Device [e.g. desktop, mobile]: Desktop

Additional context

[Athou]

I never managed to reproduce this. Did you?

[parnic]

No. I haven't seen it again.